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Organic & Biomolecular Chemistry SUPPORTING INFORMATION Exploring the origins of selectivity in soluble Epoxide Hydrolase from Bacillus megaterium Eila Serrano-Hervás, a Marc Garcia-Borràs* b and Sílvia Osuna* a SUPPORTING INFORMATION Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2017

Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

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Page 1: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry

SUPPORTINGINFORMATION

ExploringtheoriginsofselectivityinsolubleEpoxideHydrolasefromBacillusmegateriumEilaSerrano-Hervás,aMarcGarcia-Borràs*bandSílviaOsuna*a

SUPPORTINGINFORMATION

Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.This journal is © The Royal Society of Chemistry 2017

Page 2: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

Computationalmethods

Full geometry optimizationswere performedwith the hybrid DFT B3LYP functional1, 2 and the 6-31G(d)basis set3, 4 basis set using Gaussian 09,5 awidely accepted level of theory for studyingmechanisms oforganicreactions.6,7Theeffectsoftheactivesiteenvironmentoftheproteinwereimplicitlyincludedinallcalculations using the Conductor-like Polarizable ContinuumModel (CPCM)8, 9 with diethyl ether as thesolvent (ε=4). The transition states (TS) were located by using a Bofill update TS search on a reducedpotentialenergysurface.10Analyticalfrequencycalculationswereperformedatthesameleveloftheoryasthegeometryoptimizationstoobtainthezeropointenergies(ZPE).ThenatureofthestationarypointswasdeterminedineachcaseaccordingtotheHessianmatrixeigenvalues.Wehavealsocheckedthatimaginaryfrequencies exhibit the expected motion, while transition states have also been verified by intrinsicreactioncoordinate (IRC)calculations.Moreaccurateenergieswereobtainedbysingle-pointcalculationsincluding the DFT hybrid B3LYP-D3BJ dispersion correctionwith the larger 6-311+G(2d,2p) basis set. AllenergiesareZPE-corrected.Active sitemodel. The quantum chemical model used has been devised based on themost populatedcluster from a 1000-ns MD simulation on the alkyl-enzyme intermediate (Int1, see full details of MDsimulationbelow).ThestartingstructurewasobtainedfromtheX-raycrystalstructureofwild-typeBmEHfromthePDBstructure:4NZZ.Theclustermodelconsistsof:Asp239-His267-Asp97catalytictriad,thetwoactiveTyr144andTyr203,thenucleophilicwatermoleculeandtwohydrogenbondedamidebonds(Gly29-Phe30 and Phe30-Pro31 from the oxyanion motif HGFP). In addition, Trp98, Leu168, Met145, Thr241,Pro240 residues were also included to appropriately describe the shape of the active site cavity ofBmEH4NZZenzyme.Allaminoacidsweretruncatedattheα− orβ−carbon,exceptforthetyrosines,whicharemodelledasphenolsandforthePro240, inwhichonlytheα− anditsside-chaincarbonattachedareincludedtoproperlysimulate theconformational rigidityofproline.Atoms inblack inFigure2are thosemaintained fixed to their initial Cartesian coordinates during the optimizations. Hydrogen atoms wereincludedmanually based either on literature and BmEH4NZZ active site rearrangement, resulting the twoaspartate Asp97 and Asp239 active site residues modelled as in the negatively charged state, whereasHis267wasmodelled in the neutral form, obtaining a quantummodelwith an overall charge of -2 (seeFigure2).

Theepoxidesubstratesusedtomodelthemechanismsweretheracemicstyreneoxide(rac-SO)anditsracemicparanitrosubstitutedderivative(rac-p-NSO,clustermodelsof195and197atoms,respectively).Toexploretheoriginsoftheenantio-andregioselectivityofBmEHandtheeffectofthepresenceoftheNO2group,allplausiblereactionmechanismshouldbeconsidered.Thus,atotalof16reactionpathwaysneedtobecomputedtotakeintoaccountthatEHshydrolysisofrac-epoxidescantakeplaceviaattackoneithercarbonatomofeachenantiomer,butalsotwopossiblebindingorientationsofthesubstrateonthebasisoftheproposedBmEHactivesitetunnel.11Thetwopossiblebindingposesarisefromtheorientationof the phenyl moiety of the substrate towards either region 1 (r1) placing the phenyl moiety close toHis267,orregion3(r3)whenitispointingtowardsTrp98(seeFigure1and2).

MolecularDynamics of the alkyl intermediate.1000nsMD simulation in explicitwaterwas performedusingAMBER16package12inourin-houseGPUclusterGalatea.Parameters for the non-standard alkyl-intermediatewere generatedwithin theantechambermodule ofAMBER16 using the general AMBER force field (GAFF),13with partial charges set to fit the electrostaticpotentialgeneratedattheHF/6-31G(d)levelbytherestrainedelectrostaticpotential(RESP)model.14ThechargeswerecalculatedaccordingtotheMerz-Singh-Kollmanscheme15,16usingGaussian09.5Aminoacidprotonation states were predicted using the H++ server (http://biophysics.cs.vt.edu/H++).17 Then, thecovalentlymodifiedenzyme(PD:4NZZ)wassolvatedinapre-equilibratedtruncatedcuboidboxwitha10-ÅbufferofTIP3P18watermoleculesusingtheAMBER16 leapmodule,resulting intheadditionof∼9,000solventmolecules.Thesystemswereneutralizedbyadditionofexplicitcounterions(Na+).Allsubsequentcalculations were done using the widely tested Stony Brook modification of the Amber 99 force field(ff99SB).19A two-stage geometry optimization approachwas performed. The first stageminimizes the positions ofsolventmoleculesand ions imposingpositional restraintsonsolutebyaharmonicpotentialwitha forceconstantof500kcal·mol−1·Å−2,andthesecondstageisanunrestrainedminimizationofalltheatomsinthesimulationcell. The systemsaregentlyheatedusing six50-ps steps, incrementing the temperature50Keach step (0–300 K) under constant volume and periodic boundary conditions. Water molecules weretreatedwith the SHAKEalgorithm such that the anglebetween thehydrogenatoms is kept fixed. Long-rangeelectrostaticeffectsweremodeledusingtheparticle-mesh-Ewaldmethod.20

Page 3: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

An 8-Å cutoff was applied to Lennard-Jones and electrostatic interactions. Harmonic restraints of 10kcal·mol-1 were applied to the solute, and the Langevin equilibration scheme was used to control andequalize the temperature. The time stepwas kept at 1 fs during the heating stages, allowing potentialinhomogeneities to self-adjust. Each systemwas thenequilibratedwithout restrains for 2 nswith a 2-fstime-stepataconstantpressureof1atmandtemperatureof300K.AfterthesystemswereequilibratedintheNPTensemble, 1µsMD simulationwasperformedunder theNVTensemble andperiodic-boundaryconditions.

FigureS1.Representationof theoverlayof themostpopulated1µsMDBmEH simulation (in teal), the clustermodel structuresTS1-S-C1-r1 (ingreen)andInt1-S-C1-r1(inpurple).

FigureS2.B3LYP-D3BJ/6-311+g(2d,2p)//6-31g(d)levelcorrespondingtothedifferentstepsoftheBmEHmechanismofactionfor(R)-p-NSOsubstrateorientedtowardsregion3fortheattackatthebenzylicpositon(C1):A)epoxideringopening(TS1-R-C1-r3),B)alkyl-enzymeintermediate(Int1-R-C1-r3),C)hydrolysisofalkyl-enzymeintermediate(TS2-R-C1-r3),D)tetrahedralintermediate(Int2-R-C1-r3),E)dissociationoftetrahedral(TS3-R-C1-r3)andF)productcomplex(Prod-R-C1-r3).AlldistancesareinÅ.Activesitepocketresiduesareshownastransparentsticksandspheresandnon-polarhydrogenatomsareomittedforclarity.Atomsinblackspheresandasterisksarethosemaintainedfixed.

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Page 4: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

FigureS3.Non-covalentinteractionsrepresentationoftransitionstatesA)TS2-S-C1-r1andB)TS3-R-C1-r1forthemostfavouredattackof(S)-p-NSOhydrolysisusingtheNCIplotcomputationaltool.21,22NCIsurfaceshowintermolecularinteractionsbetweentheepoxidesubstrateandtheactivesiteresiduesincludedintheCMmodel.Allresiduesarerepresentedasballsandsticksandthetwopossibleorientationsofeachsubstrateisindicatedfor each case (region 1, His267 and region 3, Trp98). Only the most important catalytically residues are labelled regarding BmEH (PDB: 4NZZ)numberingandnon-polarhydrogenarenotshownforclarity.Greyarrowsareusedtohighlightthemostimportantnoncovalentinteractions.Themostimportantresiduesareframed.

FigureS4.EnergyprofilesatB3LYP-D3BJ/6-311+g(2d,2p)//B3LYP/6-31g(d,p)leveloftheoryforallpossibleBmEH-mediatedepoxiderac-SOhydrolysisoutcomes.Allenergiesareinkcal·mol-1andreferencedtothelowestenergyRCforeachenantiomer,RC-S-SO-r1andRC-R-SO-r1,respectively.

TS2-S-C1-r1 TS3-R-C1-r1

A B

Page 5: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

FigureS5.B3LYP-D3BJ/6-311+g(2d,2p)//6-31g(d) levelcorrespondingtothedifferentstepsof theBmEHmechanismofactionfor(S)-SOsubstrateorientedtowardsregion1fortheattackatthebenzylicpositon(C1):A)epoxideringopening(TS1-S-SO-C1-r1),B)alkyl-enzymeintermediate(Int1-S-SO-C1-r1),C)hydrolysisofalkyl-enzymeintermediate(TS2-S-SO-C1-r1),D)tetrahedralintermediate(Int2-S-SO-C1-r1),E)dissociationoftetrahedral(TS3-S-SO-C1-r1)andF)productcomplex(Prod-S-SO-C1-r1).AlldistancesareinÅ.Activesitepocketresiduesareshownastransparentsticksandspheresandnon-polarhydrogenatomsareomittedforclarity.Atomsinblackspheresandasterisksarethosemaintainedfixed.

References

1. C.Lee,W.YangandR.G.Parr,Phys.Rev.B,1988,37,785-789.2. A.D.Becke,J.Chem.Phys.,1993,98,5648-5652.3. P.C.HariharanandJ.A.Pople,Theor.Chim.Acta,1973,28,213-222.4. W.J.Hehre,R.DitchfieldandJ.A.Pople,J.Chem.Phys.,1972,56,2257-2261.5. G.W.T.M.J.Frisch,H.B.Schlegel,G.E.Scuseria,,J.R.C.M.A.Robb,G.Scalmani,V.Barone,B.

Mennucci,,H.N.G.A.Petersson,M.Caricato,X.Li,H.P.Hratchian,,J.B.A.F.Izmaylov,G.Zheng,J.L.Sonnenberg,M.Hada,,K.T.M.Ehara,R.Fukuda,J.Hasegawa,M.Ishida,T.Nakajima,,O.K.Y.Honda,H.Nakai,T.Vreven, J.A.Montgomery, Jr.,,F.O. J.E.Peralta,M.Bearpark, J. J.Heyd,E.Brothers,, V. N. S. K. N. Kudin, T. Keith, R. Kobayashi, J. Normand,, A. R. K. Raghavachari, J. C.Burant,S.S.Iyengar,J.Tomasi,,N.R.M.Cossi,J.M.Millam,M.Klene,J.E.Knox,J.B.Cross,,C.A.V.Bakken,J.Jaramillo,R.Gomperts,R.E.Stratmann,,A.J.A.O.Yazyev,R.Cammi,C.Pomelli,J.W.Ochterski,,K.M.R.L.Martin,V.G.Zakrzewski,G.A.Voth,,J.J.D.P.Salvador,S.Dapprich,A.D.Daniels,, J.B.F.O.Farkas, J.V.Ortiz, J.Cioslowski,anda.D. J. Fox,Gaussian09,RevisionD.01,Gaussian,Inc.,WallingfordCT,2013.

6. G.Kiss,N.Celebi-Oelcuem,R.Moretti,D.BakerandK.N.Houk,Angew.Chem.Int.Ed.,2013,52,5700-5725.

7. F.Himo,Theor.Chem.Acc.,2006,116,232-240.8. V.BaroneandM.Cossi,J.Phys.Chem.A,1998,102,1995-2001.9. V.Barone,M.CossiandJ.Tomasi,J.Comp.Chem.,1998,19,404-417.10. S.K.BurgerandP.W.Ayers,J.Chem.Phys.,2010,132,234110.11. X.-D.Kong,S.Yuan,L.Li,S.Chen,J.-H.XuandJ.Zhou,Proc.Nat.Acad.Sci.USA,2014,111,15717-

15722.12. D.A.Case,T.A.Darden,T.E.Cheatham,C.L.Simmerling,J.Wang,R.E.Duke,R.Luo,M.Crowley,

R.C.Walker,W.Zhang,K.M.Merz,B.Wang,S.Hayik,A.Roitberg,G.Seabra,I.Kolossváry,K.F.Wong, F. Paesani, J.Vanicek,X.Wu, S.R.Brozell, T. Steinbrecher,H.Gohlke, L. Yang,C. Tan, J.

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Page 6: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

Mongan, V.Hornak,G. Cui, D.H.Mathews,M.G. Seetin, C. Sagui, V. Babin and P. A. Kollman,AMBER16,UniversityofCalifornia,SanFrancisco,2016.

13. J.Wang,R.M.Wolf,J.W.Caldwell,P.A.KollmanandD.A.Case,J.Comp.Chem.,2004,25,1157-1174.

14. C.I.Bayly,P.Cieplak,W.CornellandP.A.Kollman,J.Phys.Chem.,1993,97,10269-10280.15. B.H.Besler,K.M.MerzandP.A.Kollman,J.Comp.Chem.,1990,11,431-439.16. U.C.SinghandP.A.Kollman,J.Comp.Chem.,1984,5,129-145.17. R.Anandakrishnan,B.AguilarandA.V.Onufriev,NucleicAcidsRes.,2012,40,W537-W541.18. W.L.Jorgensen,J.Chandrasekhar,J.D.Madura,R.W.ImpeyandM.L.Klein,J.Chem.Phys.,1983,

79,926-935.19. J.Wang,P.CieplakandP.A.Kollman,J.Comp.Chem.,2000,21,1049-1074.20. T.Darden,D.YorkandL.Pedersen,J.Chem.Phys.,1993,98,10089-10092.21. J. Contreras-García, E. R. Johnson, S. Keinan, R. Chaudret, J.-P. Piquemal,D.N. Beratan andW.

Yang,J.Chem.TheoryComput.,2011,7,625-632.22. E. R. Johnson, S. Keinan, P.Mori-Sánchez, J. Contreras-García, A. J. Cohen andW. Yang, J. Am.

Chem.Soc.,2010,132,6498-6506.

Page 7: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

Cartesiancoordinatesofallanalyzedstructures

RC-S-r1C3.1218250.913373-6.063232C2.372582-0.417722-6.004175O2.344332-1.174090-6.982210N1.735075-0.702694-4.831440C1.026467-1.966736-4.654905C-0.493547-1.735401-4.577687O-0.951315-0.877462-3.799086C1.522852-2.710617-3.384626C1.002523-4.129639-3.291613C1.723567-5.188832-3.863475C-0.224314-4.416303-2.675992C1.232115-6.495198-3.829929C-0.721530-5.720787-2.643276C0.003732-6.764954-3.222321N-1.312504-2.480843-5.349308C-0.958062-3.584905-6.275020C-2.315112-4.227240-6.594022C-3.300728-3.052401-6.497747C-2.768591-2.244730-5.309206C3.4880353.897733-2.592967C4.8351793.163777-2.656219O5.8916973.804622-2.614047C2.2127643.125073-2.956444C1.9404361.998715-1.944473O1.7155282.348685-0.759999O2.0489610.789946-2.349245N4.8113761.805811-2.728593C6.0180180.992573-2.643603C5.752655-0.346018-1.926635C5.414723-0.222072-0.466597C4.1718290.0286100.064797C6.327551-0.2993080.648556C5.562909-0.0889291.833877C7.709452-0.5329530.771738N4.2548680.1007771.443055C6.139374-0.1035823.108898C8.286179-0.5491842.037136C7.509016-0.3348743.194906C-2.491924-4.5770034.960473C-2.048674-4.4937403.640281C-2.407613-3.4539095.788696C-1.526997-3.3011213.140469C-1.889279-2.2550695.303847C-1.449380-2.1784733.976151O-0.949371-0.9838833.544771C1.044858-6.5524236.686135C1.618405-5.2246617.195408C1.728955-4.1777886.083408C-8.378052-2.297238-3.100019C-8.282150-3.822001-2.978299C-6.886956-4.414017-3.259372C3.660950-5.7227432.007463C3.731420-4.3278262.059706C2.557238-6.3234761.393920C2.714857-3.5372781.516453C1.536412-5.5476700.848349C1.608908-4.1485600.911413O0.576322-3.4489180.361111C-4.8631578.0049722.166770C-3.6058158.3229921.353399

C-2.4838637.3025761.587327O-2.8209066.0677241.576492O-1.3231027.7356661.787114C-4.4958485.2269664.777165C-3.0396715.3108665.273471O-2.7726545.1926056.476862C-5.3471564.2754725.625776N-2.1009365.5518204.323316C-0.6840655.7361234.647347C0.3065095.1350293.626957C-0.1167423.7516373.117131C-4.4519345.372947-1.351934C-3.1803434.632795-1.597222C-2.7392583.880753-2.660230N-2.1425104.611609-0.687786C-1.1385383.868053-1.221486N-1.4656343.406523-2.420907O-0.5645891.927703-4.710760O-0.392094-0.8699570.830481H3.6847691.113089-5.148917H2.3989221.725124-6.196611H2.616428-2.717519-3.429361H1.237516-2.130519-2.501768H2.681367-4.985949-4.336637H-0.784674-3.613920-2.206935H1.809445-7.300834-4.274857H-1.673550-5.921543-2.159667H-0.381249-7.780297-3.193534H1.271912-2.561301-5.535593H-2.315496-4.717419-7.570739H-2.552272-4.981494-5.835751H-3.259162-2.448125-7.410736H-4.336199-3.369659-6.350644H-2.973299-1.173840-5.374466H-3.177541-2.603711-4.356332H-0.266551-4.284813-5.803428H2.2645112.727908-3.971128H1.3698113.821164-2.921955H3.3924244.265670-1.564205H6.646951-0.968332-2.050023H4.945626-0.869249-2.455057H3.2283490.171967-0.447241H8.321079-0.696685-0.111735H9.353126-0.7272552.139239H5.5387140.0614973.998789H7.986824-0.3509264.170310H6.7782531.575536-2.116659H-2.105391-5.3620802.989891H-2.750104-3.5097636.818172H-1.168680-3.2450732.117401H-1.820600-1.3728215.932259H-0.736807-1.0444862.590010H0.982469-4.8331607.998797H2.373700-4.5399115.275201H0.742867-3.9592015.661489H1.681009-6.9857025.906553H-8.997935-4.278948-3.675184H-6.570964-4.058344-4.252652H-7.760027-1.778823-2.362258H2.488334-7.4064971.338731H4.587635-3.8414252.518771

Page 8: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H0.678725-6.0048100.365708H2.786344-2.4536241.550017H0.639424-2.4893960.527923H-3.8498478.3113180.282180H-3.2242409.3220731.584220H-5.2179166.9975051.940696H-5.2749614.5448496.681935H-6.3972634.3187835.321264H-4.9092986.2419004.840173H0.6671483.3499582.468206H-0.2818963.0498783.943066H-1.0400783.8206112.534715H-0.5329285.2720035.625515H-5.1704095.155812-2.146787H-4.9032555.094672-0.394405H-3.2624983.654915-3.579732H-0.1946513.679399-0.725852H-0.7405592.451706-3.898861H-5.6683788.7159341.950452H-9.409093-1.958552-2.952493H3.7949140.892064-6.920511H6.4100960.785832-3.649808H3.6024424.782529-3.227645H4.455655-6.3294242.430051H0.965417-7.2820907.498413H-0.4483506.8040054.751055H-2.901878-5.5071595.342629H-2.1743295.0917600.226517H-0.5666561.014132-4.383716H0.045547-6.4111046.260320H-2.3940755.6568643.346912H1.789534-0.054783-4.033554H3.9158031.318236-2.717764H3.4900580.3459662.051961C-1.119911-0.250332-0.276481C-0.2438930.5605190.585099H-0.7110371.1787941.349468H-0.727716-0.530346-1.251835C-2.603367-0.167904-0.189723C-3.277812-0.1163641.040500C-3.331542-0.074910-1.386273C-4.6563560.0477361.080881H-2.725627-0.1991201.969860C-4.7110520.104662-1.358374H-2.808767-0.135716-2.336300C-5.3544350.165411-0.122036H-5.1911430.0952382.020495H-5.2860780.199171-2.270277H0.7159630.9003850.199588H-4.2952736.457707-1.328442H-4.6569358.0541353.241207H-4.5175664.9536893.717679H-8.060389-1.961234-4.094392H-0.482533-3.178885-7.176182H1.2483695.0117314.182808H-5.0069213.2399395.521741O0.6178396.0083732.554698H-8.600830-4.131316-1.972058C-6.951416-5.947645-3.310323H-5.974033-6.380129-3.551135H-7.264861-6.357463-2.341960H-7.667193-6.293330-4.064653C-5.835985-3.953356-2.238582

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Page 9: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 10: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 11: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 12: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 13: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 14: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 15: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

C-0.615873-4.720173-2.599986C-0.384437-6.053770-2.970912C-1.810369-4.413538-1.934493C-1.322802-7.050781-2.695536C-2.751562-5.406883-1.656405C-2.513075-6.728829-2.039592N-2.072995-3.013826-5.196291C-2.057800-4.367005-5.802408C-3.536754-4.627855-6.115859C-4.092288-3.227040-6.415275C-3.368471-2.336133-5.399107C3.9629972.277499-2.816501C5.0757161.226710-3.005752O6.1825051.580300-3.437553C2.4950592.021401-3.248521C1.6197220.823261-2.785862O1.0816851.260659-1.131549O2.121217-0.347408-2.689042N4.828246-0.036805-2.586027C5.844501-1.082301-2.708100C5.334385-2.465122-2.279473C5.225158-2.688920-0.798681C4.075837-2.926358-0.083598C6.313570-2.7669240.147753C5.739255-3.0537741.422247C7.712514-2.6468750.050934N4.376751-3.1292181.249283C6.519901-3.2159042.572960C8.490538-2.8086731.192569C7.899435-3.0892822.442320C-3.309700-4.2335005.510699C-2.772849-4.3864424.226322C-2.963992-3.0908836.242024C-1.906841-3.4337633.676950C-2.103101-2.1324295.708199C-1.560327-2.2933614.420092O-0.713318-1.3263773.983277C-0.183000-6.7698997.294000C0.313234-5.5150088.022679C0.860926-4.4680697.049626C-8.926598-1.359001-2.551700C-8.647884-2.864730-2.483299C-7.159431-3.255721-2.570868C2.357101-6.8263022.502600C2.125579-5.6115603.156338C2.062560-6.9078381.134705C1.621044-4.5017372.474143C1.563554-5.8138970.438349C1.320680-4.5582631.076412O0.873180-3.5364260.401406C-3.1788998.3401991.820599C-1.8320698.9928992.134973C-0.6245108.2388341.560024O-0.7288576.9376011.590676O0.3584188.8633791.151890C-3.2805975.7356034.626406C-1.8385975.3699625.032528O-1.5903744.8792086.138789C-4.3129005.1637985.602395N-0.8800065.6343024.104878C0.5466965.4380004.362998C1.2987944.6667883.269779C0.6545473.3159042.960180

C-3.4537995.440498-1.495100C-2.1409174.753267-1.283795C-1.6242793.603141-1.824565N-1.1753335.214649-0.401993C-0.1367384.370051-0.406775N-0.3802343.384190-1.265443O0.4272190.950843-3.487034O0.483674-1.2895731.502067H3.273541-0.498225-5.076827H2.4209420.070170-6.533396H1.409836-4.044841-2.821686H0.312110-2.827935-2.200117H0.543975-6.313065-3.474477H-1.995042-3.391107-1.617039H-1.120571-8.077770-2.986569H-3.665328-5.149924-1.128150H-3.242161-7.502767-1.817690H0.364401-3.904415-5.076527H-3.661240-5.331258-6.942952H-4.031348-5.050134-5.234347H-3.826415-2.925404-7.434543H-5.179003-3.164412-6.318147H-3.204314-1.313297-5.744691H-3.909772-2.281951-4.446085H-1.640916-5.102368-5.114597H2.4802591.908891-4.339054H1.9356832.940134-3.045998H3.9762252.537009-1.748630H6.031895-3.200529-2.703724H4.366475-2.657084-2.757992H3.043698-2.980929-0.404962H8.183792-2.435142-0.905064H9.571094-2.7174311.123814H6.062794-3.4351903.533633H8.531506-3.2097473.317733H6.721916-0.799571-2.114850H-3.025722-5.2626183.634879H-3.367358-2.9402247.239996H-1.492685-3.5727472.682191H-1.835911-1.2466796.276270H-0.381079-1.4405783.056243H-0.508905-5.0764858.601381H1.700767-4.8799216.479417H0.085011-4.1585726.342402H0.623014-7.2417076.721413H-9.187500-3.361377-3.301286H-6.746297-2.784579-3.476647H-8.469565-0.816539-1.718322H2.231003-7.8432360.602973H2.341827-5.5234674.219703H1.336064-5.891546-0.620792H1.428051-3.5702433.002297H0.661234-2.2050701.059211H-1.79531410.0270191.778978H-1.6894179.0320713.224564H-3.3744418.3427710.741942H-4.1150475.5090976.619629H-5.3230675.4736835.317601H-3.3536586.8297724.590736H1.2404182.7911912.200526H0.6081912.6871613.856225H-0.3643153.4494632.585398H0.6203254.8968375.308959

Page 16: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-4.0525494.882134-2.217349H-4.0200345.507155-0.560288H-2.0463212.921270-2.544135H0.7346674.4820310.225141H0.2321362.465727-1.300496H-4.0031668.8753862.304917H-10.002966-1.158164-2.523901H3.651089-1.186864-6.683998H6.186583-1.130842-3.751148H4.3098303.161640-3.355512H2.751407-7.6827553.041718H-0.567419-7.5093188.004097H1.0392846.4111554.495913H-3.981442-4.9789695.923980H-1.1943436.0231620.260471H0.0204110.066173-3.609368H-0.988961-6.5232516.594629H-1.1220206.1158763.234920H1.681558-1.539783-3.866897H3.842877-0.293171-2.429108H3.700369-3.4583581.928306C0.4207620.156390-0.500761C1.152712-0.2524580.797947H1.2448890.6144151.462907H0.491573-0.704251-1.178087C-1.0700190.423222-0.260038C-1.5458600.9962420.931732C-2.0067190.091673-1.253645C-2.8981951.2582601.122150H-0.8570621.2296921.733688C-3.3647530.342373-1.084533H-1.675858-0.371426-2.175855C-3.7959880.9322720.103745H-3.2628341.6995402.040998H-4.0838400.086236-1.852168H2.172549-0.5505840.519770H-3.3184086.458276-1.876251H-3.1989417.3027932.155310H-3.4665845.3818823.605830H-8.533662-0.928214-3.480201H-1.449588-4.353690-6.715452H2.3037104.4822733.675443H-4.2804424.0707875.612965O1.5032705.4365872.083735H0.7317216.0319431.915904H-9.065714-3.274586-1.552200C-7.008427-4.776586-2.723660H-5.955459-5.064656-2.816659H-7.417164-5.298560-1.849230H-7.538809-5.145909-3.608729C-6.349566-2.754079-1.365936H-6.388271-1.666209-1.258991H-6.728352-3.195433-0.435116H-5.295364-3.037657-1.459941H1.093499-5.7885198.743744C2.013268-1.9538066.541854H1.190251-1.7361275.857096H2.389825-1.0169856.958143H2.822824-2.4514146.001832S1.450470-2.9759447.951222N-5.2163431.2086280.288235O-5.5836351.7155751.352346O-5.9941170.930335-0.633417

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Page 17: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 18: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 19: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 20: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 21: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

H-3.6251851.2351532.188418H-3.5925450.365453-2.017136H2.3769640.0192800.499934H-4.4665985.982350-1.059816H-4.5207927.6440523.475340H-4.5022564.3883513.917152H-8.011755-2.434413-3.934544H-0.626366-3.768367-7.146591H-5.0221582.6698265.706324H1.2680944.4518024.095477O0.3413725.4118212.589218H-0.5636165.6932312.306921H2.213522-6.2757337.987110S2.062601-3.3862667.505252C2.290278-2.1649406.162090H2.611567-1.2329696.632229H3.065847-2.4948255.466003H1.357974-1.9893365.620104N-5.0859641.352301-0.039685O-5.5971801.8882100.949088O-5.6688091.230210-1.122311H-8.449377-4.052608-1.347289C-6.123806-2.555734-0.978665H-5.053929-2.487297-0.754755H-6.435536-1.583950-1.372357H-6.650477-2.717875-0.029573C-5.840686-5.025501-1.413213H-5.993421-5.848825-2.120215H-4.766469-4.946506-1.213447H-6.331873-5.299956-0.471370TS2-S-C2-r1C3.113145-0.028190-5.911629C2.220511-1.268244-5.823482O1.965552-1.938611-6.830461N1.741463-1.577168-4.586473C0.923801-2.765003-4.365986C-0.573507-2.423002-4.376292O-0.998038-1.452934-3.717909C1.313341-3.476570-3.042317C0.746706-4.877005-2.939039C1.420619-5.959821-3.523857C-0.470374-5.121310-2.288131C0.887804-7.249102-3.474232C-1.009866-6.408883-2.241471C-0.334601-7.476692-2.837237N-1.414745-3.203886-5.088030C-1.100369-4.407160-5.910388C-2.484667-4.995514-6.210527C-3.400344-3.762589-6.250180C-2.855749-2.885166-5.117815C3.5515973.125093-2.602781C4.8704062.334060-2.682655O5.9313412.936835-2.895626C2.2083112.443169-2.988252C1.6773521.193820-2.222962O1.2697951.556463-0.923779O2.2554690.061487-2.347347N4.8109520.999987-2.457398C5.9928880.147530-2.482189C5.678394-1.305964-2.906604C5.480151-2.271452-1.771351C4.344464-2.469586-1.018672

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Page 22: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-3.311324-3.138158-4.151981H-0.461317-5.099537-5.362786H2.2478632.141877-4.037399H1.4362823.214919-2.920580H3.4845623.508496-1.575840H6.512051-1.663849-3.521029H4.802911-1.300935-3.564802H3.381774-1.984302-1.099919H8.315682-2.905688-2.361940H9.549942-4.607990-1.053395H6.068890-5.3808821.386568H8.450319-5.8318790.798077H6.4869900.142864-1.500952H-2.295245-5.7044793.463703H-2.967105-3.5071867.100227H-1.046990-3.7816432.520023H-1.728250-1.5788896.146592H-0.302297-1.5333952.909727H0.722884-5.0581698.570443H2.191845-4.7363485.890744H0.572274-4.1115746.249138H1.380890-7.1679936.422583H-7.775263-4.695120-3.371466H-5.769093-3.257694-2.962545H-8.553638-2.046423-2.006689H2.610992-7.7409341.179409H3.961568-4.5092583.672974H0.944917-6.2408300.135455H2.294942-3.0048562.631178H0.619559-2.3376011.074924H-3.1346329.1827271.462427H-2.7667978.0745492.803094H-5.1696537.8355560.892598H-5.2138284.4301186.544686H-6.3574364.2575975.193704H-4.7879456.1197534.697422H0.8728723.3027002.188985H0.1624372.8780373.761480H-0.8687353.4967022.459346H-0.4396644.8802535.405214H-4.9950144.698715-2.351682H-4.8875224.611842-0.587490H-3.1701762.747726-3.338010H-0.0793013.438770-0.583711H-0.5914931.838410-2.651557H-5.2570878.3457122.584994H-9.518306-2.956695-3.171457H3.992868-0.280564-6.508533H6.7002850.604615-3.181715H3.6861863.995985-3.248607H4.136426-6.8965122.968792H0.619026-7.4880917.988467H-0.3604966.5164524.748120H-3.264669-5.5963805.759485H-2.0088725.0390340.047714H-0.1051950.154363-3.108780H-0.237404-6.5396426.761344H-2.2948555.5924983.200485H1.940839-0.955985-3.790967H3.8939310.553535-2.331376H3.895058-3.7328510.638814C0.281935-0.5306800.196267C1.3682450.5737940.122325

H1.3379041.1553171.047712H0.367285-1.143832-0.708184C-1.150384-0.0272800.288506C-1.5832380.6882841.417296C-2.077478-0.323534-0.720366C-2.8941271.1356361.523449H-0.8903500.8851532.227130C-3.3990590.103105-0.626472H-1.766791-0.888613-1.593811C-3.7883270.8386640.491772H-3.2311631.6994962.383832H-4.119118-0.114949-1.404422H2.3319780.0636310.061787H-4.1614145.979427-1.440990H-4.7915406.6855512.181229H-4.4798144.8021293.574924H-8.007942-2.190632-3.681285H-0.583243-4.099595-6.827259H-8.234292-4.529366-1.685276C-5.535035-5.157799-1.994246H-4.470390-5.025539-1.772547H-5.972386-5.746122-1.177901H-5.617121-5.750781-2.912221C-6.076055-2.970060-0.856833H-6.496438-1.964579-0.953310H-6.567735-3.459150-0.006206H-5.016389-2.856051-0.604391H1.3671315.0632093.853604O0.4194795.9319012.308433H-0.4671675.9592371.886578H-5.0116203.1207985.376106N-5.1636391.3194400.581150O-5.4590582.0827371.506643O-5.9729630.948592-0.276175H2.333353-5.6739008.223980S2.278837-2.8526907.414299C2.431499-1.8142395.915332H2.832553-0.8507786.237482H3.124598-2.2650825.200937H1.461560-1.6570785.437715Int2-S-C2-r1C3.235397-0.003707-5.832196C2.362207-1.259246-5.743253O2.120633-1.933398-6.752857N1.891860-1.576741-4.507065C1.099006-2.783291-4.289802C-0.406088-2.482742-4.339254O-0.869591-1.513556-3.708234C1.476279-3.455260-2.942147C0.930072-4.860882-2.807295C1.626884-5.948795-3.355199C-0.290091-5.107223-2.163034C1.113026-7.244332-3.277293C-0.810741-6.401187-2.087994C-0.113070-7.473881-2.648064N-1.209590-3.301012-5.056301C-0.842335-4.508892-5.850088C-2.202007-5.143463-6.168379C-3.152101-3.939036-6.249535C-2.657682-3.026300-5.121807C3.5102043.208984-2.563197C4.8551762.455330-2.596045

Page 23: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 24: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 25: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 26: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 27: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

H4.7328644.881678-6.603102H5.9103874.846585-5.272283H4.0672136.426026-4.699308H-1.1616223.058182-2.210583H-0.5167392.722592-3.832882H0.5371073.399627-2.578481H-0.0586364.792484-5.406659H4.4389624.5641492.157779H4.4579135.3156750.555917H2.3617992.6993092.360357H-0.3364854.508251-0.297548H-0.4240151.9335550.454052H4.8418628.440103-2.377811H9.532925-1.6156953.400748H-3.714885-0.4716096.862126H-6.388316-0.2307503.563095H-4.3178293.7031532.782353H-3.600166-7.330587-2.821534H-0.102429-7.719221-7.839808H-0.3011876.409192-4.737210H3.618851-5.469584-5.651215H1.6899065.931721-0.291943H-0.2502740.5221444.223095H0.747190-6.649227-6.711940H1.7258255.906439-3.310255H-1.932142-1.2632953.851135H-4.6119410.6347701.369363H-3.550387-3.629269-1.338248C-0.182780-0.720545-0.575331C-0.7577040.639671-1.025259H-0.0249941.133636-1.677618H-0.849774-1.0961800.214130C1.215647-0.5948860.011364C1.396868-0.4504461.393401C2.348463-0.618557-0.820085C2.668796-0.3669381.951130H0.535975-0.4246372.050220C3.627343-0.518778-0.287115H2.220816-0.726245-1.890843C3.772582-0.4083461.099007H2.795514-0.2896053.022558H4.505661-0.543044-0.919403H-1.6359950.405185-1.637198H3.7676186.1853371.929323H3.8713456.967602-2.196070H4.0099355.052076-3.608867H7.892085-1.2767762.818070H0.792695-4.3785396.810237H-1.8716124.768372-3.878024H4.7520323.521263-5.480458H8.975032-4.0985203.427708C6.439157-5.1432993.678816H6.328153-4.9305324.748399H5.478474-5.5201443.310551H7.173546-5.9524683.576463C7.003785-4.2022271.402559H7.204123-3.3000350.817466H7.814479-4.9171771.211108H6.076979-4.6430291.018784N5.112973-0.3605091.670301O5.227948-0.3874482.902225O6.077340-0.3006170.900890O-1.0374455.694531-2.292506

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Page 28: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 29: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 30: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 31: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 32: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 33: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 34: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 35: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 36: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 37: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 38: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 39: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 40: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 41: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 42: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

C5.483404-0.511403-3.097500C4.978239-1.955599-2.929035C4.970130-2.489410-1.524196C3.879134-2.885649-0.786317C6.126677-2.750066-0.698682C5.650108-3.2978290.529340C7.514901-2.593145-0.872291N4.279986-3.3662000.442672C6.513936-3.6704251.566591C8.375325-2.9645230.155144C7.879070-3.4945421.364871C-3.276167-4.7402595.067385C-2.678287-4.6491863.804692C-3.091275-3.6889545.972150C-1.907836-3.5400003.440885C-2.328150-2.5748925.624499C-1.727750-2.4893074.355899O-0.989964-1.3803264.092405C-0.019718-7.3459306.479892C0.398369-6.2483737.464748C0.770049-4.9475466.749352C-9.259403-1.248594-2.470900C-8.874576-2.728982-2.376317C-7.366121-3.019756-2.508240C2.343705-6.8482921.624109C2.290214-5.7624902.504974C1.764161-6.6966390.356946C1.682154-4.5561022.141820C1.158798-5.504554-0.021653C1.088929-4.3761050.853273O0.522781-3.2667960.463639C-3.6162858.1364952.657911C-2.1721508.2742662.178615C-1.4425456.9319652.058943O-2.1839675.8896902.017435O-0.1876776.9325072.006658C-3.5456775.2637225.189386C-2.0668475.2056935.610928O-1.7444615.2950666.802569C-4.3516024.1331855.854008N-1.1756155.0369044.603370C0.2759565.1096044.768285C1.0083544.1526063.813529C0.8090732.6876304.186890C-3.9349885.574282-0.921393C-2.8797114.524730-1.042381C-2.5897703.622283-2.036207N-1.9272674.316028-0.065141C-1.1070383.334709-0.474907N-1.4823842.885041-1.669213O-0.1595141.293191-3.048611O0.107190-1.0695281.617749H2.7513020.268294-5.291767H1.9085340.891557-6.732166H1.269337-3.599447-3.503244H0.165137-2.564257-2.602160H0.537843-5.830865-4.319745H-2.100938-3.352765-2.010329H-0.969319-7.763796-3.976524H-3.611216-5.282541-1.659439H-3.057783-7.497838-2.649312H-0.017458-3.195361-5.597629H-4.066897-4.586290-7.408853

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Page 43: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

H3.4964830.160900-2.700872H3.648124-3.7623941.130606C0.775513-0.011601-0.418762C0.8905950.0052501.118046H0.4277220.9308881.489436H1.337705-0.854087-0.820904C4.879955-0.1009402.774467C3.822428-0.6851683.472236C4.6854770.5203991.541610C2.550542-0.6473882.913248H4.004692-1.1544144.430562C3.4046670.5515770.998442H5.5265440.9602561.021349C2.319512-0.0358091.669084H1.717412-1.0953023.440969H3.2473681.0288650.040367H-0.284233-0.158393-0.655635H-3.4975366.575576-0.848382H-3.6582847.7191883.666675H-3.6410995.2340564.101271H-8.908348-0.809270-3.412074H-1.916664-3.483215-7.176657H1.250519-6.5920668.064157S1.251156-3.6522427.965377C1.647765-2.2774696.826793H1.933963-1.4227357.443172H2.486390-2.5438796.178227H0.781828-2.0069726.218308H2.0827914.3921613.908612O0.5863184.3188832.463847H-9.231689-3.140679-1.421139C-7.114003-4.532547-2.587671H-7.662351-4.986976-3.420618H-6.049661-4.752206-2.726174H-7.437858-5.030627-1.665249C-6.545517-2.395621-1.369788H-6.650145-1.307115-1.333441H-6.862980-2.794798-0.398247H-5.479472-2.618758-1.486625H-4.0218393.1526505.495280N6.221611-0.1423003.350376O6.382085-0.7470534.415669O7.1349630.4313162.750133H0.4173115.2756712.274251Int2-S-C2-r3C2.4022160.026007-6.263302C1.339018-1.081249-6.220767O0.896252-1.587062-7.260619N0.941795-1.456239-4.977454C-0.072326-2.480604-4.758867C-1.476973-1.854912-4.712781O-1.684093-0.843950-4.017169C0.213535-3.242715-3.440985C-0.705150-4.427062-3.223684C-0.393494-5.682203-3.768651C-1.893200-4.296235-2.490604C-1.246668-6.773535-3.593084C-2.748619-5.385275-2.311671C-2.429938-6.627410-2.865246N-2.476116-2.434899-5.416000C-2.427195-3.662101-6.255514C-3.907905-3.969195-6.514419

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Page 44: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 45: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

C0.245545-3.367428-3.258870C-0.720230-4.500484-2.982769C-0.474679-5.789237-3.481265C-1.885039-4.288192-2.232858C-1.370877-6.834035-3.246082C-2.783196-5.330316-1.993651C-2.531282-6.606483-2.502720N-2.354397-2.646701-5.367736C-2.299300-3.923100-6.130500C-3.774386-4.212018-6.437998C-4.401762-2.813339-6.543604C-3.690002-2.024905-5.438751C3.6077002.641100-2.764100C4.7502781.638388-3.032030O5.8374472.050436-3.459437C2.1529242.404204-3.245744C1.3325161.145232-2.893560O0.8462111.405146-1.143225O1.881333-0.003082-2.911682N4.5465450.346009-2.677122C5.569200-0.670900-2.918100C5.080237-2.097796-2.624124C5.016680-2.483611-1.173686C3.894877-2.823441-0.455245C6.133557-2.629929-0.269296C5.603032-3.0573110.984719C7.525903-2.462618-0.389534N4.240040-3.1605800.837320C6.418867-3.3034562.095679C8.339020-2.7091960.711742C7.790022-3.1218491.943878C-3.383700-4.6147005.179600C-2.685072-4.6912743.969345C-3.479208-3.3746425.821621C-2.088140-3.5615293.403059C-2.889124-2.2384275.268942C-2.186469-2.3196714.053136O-1.637127-1.1791893.572889C-0.171700-7.1925006.737700C-0.284948-6.3439228.009115C-0.119134-4.8519607.712892C-9.187300-1.320100-2.584300C-8.799603-2.795541-2.730235C-7.288425-3.084708-2.633683C2.296600-6.8502001.920700C2.052723-5.7400182.738017C1.965276-6.7464690.562071C1.502005-4.5597842.227224C1.419804-5.5808770.036738C1.159751-4.4269970.843545O0.668090-3.3404470.318151C-3.6043008.1864002.384000C-2.2173198.7566712.693931C-1.0943778.0421971.931270O-1.1677526.7376031.972394O-0.2109938.6863761.360718C-3.6026005.3896005.000200C-2.1440385.0768025.381452O-1.8704354.5672246.474237C-4.5620004.3434005.584400N-1.2073575.4039164.455214C0.2263005.2052004.665400C0.9278714.4303993.542936

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Page 46: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H0.3323504.6637605.608164H-4.5046035.048716-1.868890H-4.4138755.581389-0.181143H-2.5835212.984170-2.349233H0.2734434.2336440.499862H-0.2019902.404121-1.192524H-4.3776628.6601442.998219H-10.264002-1.181348-2.728880H3.315691-0.525057-6.876452H5.895477-0.610974-3.965729H3.9460663.578718-3.210552H2.726435-7.7608102.327162H-0.295375-8.2565476.963769H0.7247446.1774144.778937H-3.846849-5.4981245.607676H-1.5860725.8600010.648660H-0.3267900.402729-3.589446H-0.937996-6.9111216.007784H-1.4784145.8864383.593562H1.373967-1.116335-4.078628H3.5642570.054414-2.578262H3.583641-3.5276991.516264C0.3652960.168866-0.641307C0.3844990.0167130.897800H-0.1964990.8438641.328824H0.961688-0.644291-1.070958C4.2232150.0797272.870406C3.112689-0.4563783.526280C4.1286480.6019661.581722C1.891141-0.4704402.866299H3.218311-0.8478714.529899C2.8951550.5813310.935606H5.0095671.0032621.097377C1.7614190.0415711.561802H1.018356-0.8779183.363593H2.7993780.988556-0.062320H-0.681905-0.003813-0.939263H-3.6474356.542931-1.453421H-3.6311557.1117932.565104H-3.7042755.4478023.912819H-8.670534-0.701150-3.327118H-1.716188-3.778025-7.048127H1.9475674.2372183.904644H-4.3847053.3583145.141508O1.0879895.2040982.351311H0.3162275.8050952.222815H-9.322688-3.389888-1.966920C-6.998635-4.555094-2.969027H-5.923694-4.764918-2.945227H-7.482402-5.222922-2.245139H-7.371997-4.819285-3.964953C-6.706802-2.720442-1.259524H-6.837739-1.660191-1.023098H-7.191910-3.302503-0.465798H-5.633453-2.934812-1.218863H0.472314-6.6604608.736937C-0.110618-2.1737988.547293H-0.864937-1.9822607.780414H-0.243034-1.4638679.366240H0.887547-2.0447308.121841S-0.311940-3.8514949.245980N5.5136790.0908863.553341O5.593011-0.4486454.662564

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Page 47: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 48: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 49: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 50: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 51: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 52: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 53: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 54: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 55: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 56: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 57: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 58: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 59: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 60: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 61: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 62: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 63: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 64: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 65: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 66: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 67: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 68: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 69: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 70: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 71: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 72: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 73: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 74: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 75: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

O-1.567310-1.316565-3.777490C0.431335-3.623829-3.121484C-0.397679-4.873117-2.911302C0.022471-6.104180-3.437169C-1.613725-4.826472-2.215221C-0.752913-7.255373-3.281470C-2.394612-5.973364-2.062005C-1.968538-7.191680-2.596616N-2.286927-2.999311-5.113857C-2.182819-4.257495-5.907792C-3.648746-4.640852-6.149124C-4.376189-3.288160-6.186693C-3.665919-2.478384-5.096651C3.6131052.561296-2.870496C4.7953181.577438-3.006208O5.9126912.002403-3.336249C2.1591632.074776-3.142558C1.4938420.867697-2.386951O1.4446661.254362-0.953262O1.988517-0.329975-2.587190N4.5667030.282045-2.683660C5.609698-0.732494-2.799803C5.076793-2.169425-2.641910C4.983138-2.673077-1.229518C3.847406-2.997534-0.524733C6.093959-2.972073-0.356432C5.546894-3.4706880.862872C7.493308-2.886637-0.482770N4.179359-3.4702260.728017C6.354022-3.8702371.935175C8.297411-3.2828230.580504C7.732532-3.7683811.779115C-3.408093-4.2782945.409095C-2.819618-4.4274404.147397C-3.271650-3.0523926.070078C-2.104456-3.3852743.549689C-2.562151-2.0031945.487699C-1.968488-2.1582364.221753O-1.287999-1.1010533.718996C-0.190982-6.7225197.159769C0.469213-5.5045207.816412C0.597754-4.3277756.845964C-9.142564-1.520511-2.611312C-8.438380-2.847103-2.305602C-7.063899-2.712886-1.620469C2.336574-6.6441862.362143C2.165681-5.4058422.991958C1.804138-6.8071071.076140C1.490062-4.3542392.363300C1.131851-5.7734150.434415C0.943266-4.4965251.048623O0.317033-3.5360360.423776C-3.7210528.3279941.843212C-2.2177488.5867001.662659C-1.6284607.4989440.769641O-1.5376266.3273431.341624O-1.3604327.723869-0.416093C-3.7253425.6941374.623315C-2.2578425.5919485.087158O-1.9869415.3012736.258002C-4.5593104.6092265.326491N-1.3116955.8266304.143060C0.1091015.5315424.347854

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Page 76: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-1.2429273.4348452.979618H0.2149195.1842715.377881H-4.5187665.289192-2.388314H-4.5523525.383057-0.619505H-3.0466512.958158-3.079911H-0.0309803.325067-0.151761H-0.8273391.979510-2.169338H-4.1794469.0810232.493018H-10.077537-1.689109-3.156242H3.429221-0.913060-6.723876H6.089731-0.627292-3.782082H3.8312033.386932-3.552650H2.866579-7.4526292.856924H-0.285962-7.5490437.871218H0.7080266.4426834.228627H-3.963133-5.0945875.860720H-1.6697395.2731130.252615H-0.2281130.011418-3.002623H-1.192615-6.4767066.790926H-1.5986966.0494233.185923H1.428405-1.276290-3.941600H3.581229-0.042088-2.576583H3.503139-3.8079401.405790C0.084450-0.1856500.490288C1.5059770.1934940.016339H-0.502772-0.424141-0.407318H-0.3871630.6867410.960726C4.3268231.4521493.036624C3.0903190.9590613.448663C4.6653811.5283321.683835C2.1720070.5440272.486932H2.8587520.9026724.504501C3.7343281.1171930.740102H5.6392131.8998401.391490C2.4698940.6277771.116495H1.2266730.1299012.809554H3.9910421.157288-0.310844H1.936713-0.684214-0.479972H-3.4949226.467587-1.532627H-3.8992557.3461242.283052H-3.7888185.5958313.535961H-8.510970-0.871838-3.229576H-1.655590-4.056632-6.848215H1.6380304.1882863.715990O0.8260694.9805442.050186H0.0302005.4844201.783082H-4.2333013.6091685.024333H-9.088656-3.470703-1.674762C-6.379584-4.083484-1.511575H-5.384644-3.994971-1.062045H-6.967563-4.764915-0.883966H-6.264124-4.552912-2.494928C-7.156978-2.047933-0.238995H-7.570822-1.036511-0.293862H-7.796368-2.6353350.432248H-6.168470-1.9736190.226365H1.463144-5.7788758.190559C1.629636-1.7791026.231283H2.074016-0.8574626.613429H2.309941-2.2235675.500154H0.675376-1.5456685.753917S1.405439-2.8913307.666505N5.2922911.8879374.040473

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Page 77: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 78: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 79: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 80: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 81: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 82: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 83: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 84: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 85: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 86: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 87: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 88: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 89: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 90: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 91: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 92: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 93: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

H-4.246320-4.047537-5.877186H-4.022796-1.563034-7.659159H-5.376916-1.984701-6.600151H-3.387755-0.291426-5.698520H-4.085159-1.486589-4.600494H-1.858100-4.145652-5.781241H2.0053062.204737-3.399605H1.8483213.117725-1.924926H4.1828353.088692-1.436420H6.127000-2.714485-2.487889H4.423993-2.378843-2.728160H2.952812-2.479054-0.513518H8.000931-1.278076-0.640950H9.133695-0.8502431.516655H5.464445-1.5345963.684281H7.887321-0.9681723.653597H6.655028-0.276717-2.459349H-2.794714-5.6841312.886845H-3.616700-4.0793966.792634H-1.194610-3.8448072.459942H-2.014929-2.2359106.356247H-0.165165-1.8520663.364085H-0.492930-6.4439827.769522H1.735757-5.8923785.731437H0.146039-5.1072995.743211H0.595939-8.2208995.498160H-7.997951-1.529459-4.233835H-6.893751-2.544822-2.238585H-9.714003-1.135784-1.706755H1.869324-7.597929-0.704748H2.520693-6.3550493.358789H1.069480-5.326497-1.268094H1.710381-4.0896212.800492H0.999316-2.2695361.345131H-2.3483518.7113621.408276H-1.6587149.5479342.783861H-3.4026357.0102832.933231H-3.8206103.2301616.794049H-5.0224003.7865035.608433H-3.5725205.7012836.342093H1.2155392.8582202.326635H0.5286792.2470433.849393H-0.3588133.4412472.888208H0.6850243.8453725.985413H-4.2272645.461244-1.179643H-3.7734245.2396750.516226H-2.3989804.206423-2.879868H1.0110324.574368-0.469259H-0.2219822.751753-3.526850H-3.9573358.6492413.324128H-9.565481-0.024186-3.069028H3.2514160.207990-7.003220H5.946268-0.847899-3.961506H3.9891013.514574-3.120124H2.607190-8.1385641.618473H-0.609994-8.7068386.699521H1.1850555.5163065.697576H-4.024300-5.8305845.053600H-0.9107985.6503450.805724H-0.5585281.338871-4.090336H-0.996527-7.4495225.513785H-1.0348505.4858444.217475H1.404256-0.752291-4.064724

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Page 94: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 95: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 96: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

N-1.6755544.482511-0.981649C-0.7202913.606513-1.291603N-1.1215972.880919-2.335181O0.4765290.930279-3.158590O0.815661-1.0580391.863958C0.6542010.184572-0.276227C1.430812-0.0885241.029901C-0.8334820.409845-0.021519C-1.2922191.1717491.062224C-1.788066-0.191488-0.853333C-2.6566321.3474251.297240C-3.155590-0.023223-0.620872C-3.5967120.7498560.454018H3.535100-0.045831-4.811515H2.7696950.367007-6.367445H2.131474-3.759867-2.678249H0.785079-2.830180-2.031810H1.789143-6.114969-3.446209H-1.376028-3.894736-1.579576H0.515486-8.212294-3.124522H-2.662060-5.985899-1.266768H-1.726425-8.156555-2.042821H1.066227-3.740276-4.950054H-2.648628-5.673815-6.970384H-3.089473-5.546012-5.260222H-3.171481-3.295763-7.339922H-4.494339-3.802916-6.278451H-2.850622-1.706010-5.543835H-3.409298-2.853264-4.321758H-0.724413-5.236453-5.073765H2.4507031.985299-4.046512H1.7108723.074380-2.905922H3.7517383.215129-1.561613H6.401255-2.277752-3.089680H4.711213-1.820327-3.086272H3.287524-2.428558-0.715246H8.374203-2.949094-1.531958H9.681206-4.2618530.111948H6.131649-5.0314942.450495H8.583744-5.2897442.080113H6.627654-0.210585-1.368293H-2.576452-5.3474543.633876H-3.463347-3.1226777.207493H-1.187450-3.4731102.798154H-2.074935-1.2484406.364841H-0.339686-1.2509583.288686H0.098298-4.8267568.849419H1.781298-4.5657206.292584H0.162533-3.8830906.522209H0.847791-6.9607586.755765H-8.198999-4.246300-3.777039H-5.977074-3.171301-3.390982H-8.470280-1.754786-1.987037H2.261741-7.6406651.268626H3.458856-4.7846104.251125H0.892956-5.9101380.156182H2.084099-3.0474263.139884H0.803325-1.9915511.432281H-2.6004239.4046411.040854H-2.2594278.3054472.397267H-4.7316418.1843120.563626H-5.0393705.0746786.335775H-6.1802274.8603584.989003

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Page 97: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

N1.381011-2.166103-4.630204C0.278000-3.083200-4.361100C-1.068511-2.366689-4.573692O-1.229683-1.205653-4.151345C0.397792-3.636988-2.920404C-0.625777-4.700433-2.585202C-0.416350-6.037950-2.955063C-1.807349-4.376323-1.905009C-1.363410-7.022402-2.664448C-2.756375-5.357414-1.610618C-2.540190-6.683542-1.992969N-2.072413-3.013034-5.200010C-2.057800-4.367000-5.802400C-3.536203-4.625874-6.120444C-4.087563-3.224551-6.425221C-3.365234-2.333020-5.408450C3.9630002.277500-2.816500C5.0742311.225532-3.007554O6.1814211.578768-3.439276C2.4931182.026773-3.247636C1.6148140.829214-2.787180O1.0635301.270079-1.136441O2.118070-0.340837-2.685483N4.826340-0.038070-2.588640C5.844500-1.082300-2.708100C5.336908-2.465092-2.276620C5.228199-2.685895-0.795380C4.078764-2.921956-0.080081C6.316470-2.7614150.151346C5.741922-3.0456441.426478C7.715377-2.6410680.054700N4.379591-3.1220731.253154C6.522415-3.2048192.577671C8.493267-2.8000011.196894C7.901997-3.0779912.447129C-3.309700-4.2335005.510700C-2.782002-4.3903914.222829C-2.952223-3.0920176.238249C-1.913950-3.4434803.666573C-2.089272-2.1392645.697521C-1.555264-2.3041354.405890O-0.705223-1.3429313.964442C-0.183000-6.7699007.294000C0.312583-5.5126148.019019C0.867710-4.4718827.043549C-8.926600-1.359000-2.551700C-8.578264-2.849348-2.627886C-7.074537-3.172248-2.524900C2.357100-6.8263002.502600C2.116875-5.6091903.148683C2.076630-6.9151361.132218C1.617212-4.5036992.456645C1.582615-5.8255690.425868C1.330543-4.5670611.055713O0.888280-3.5495920.373087C-3.1789008.3402001.820600C-1.8339528.9906462.147288C-0.6249948.2431121.565922O-0.7266736.9423131.589048O0.3549218.8737551.158929C-3.2806005.7356004.626400C-1.8381135.3712745.032059O-1.5898764.8853696.140616

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Page 98: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 99: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 100: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 101: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 102: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 103: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 104: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 105: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 106: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 107: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 108: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 109: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 110: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 111: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 112: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 113: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 114: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 115: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 116: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 117: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 118: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 119: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 120: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 121: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 122: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 123: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 124: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 125: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 126: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 127: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 128: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 129: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 130: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 131: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 132: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 133: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 134: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 135: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 136: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 137: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 138: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 139: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 140: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 141: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 142: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 143: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 144: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 145: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 146: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 147: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 148: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 149: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 150: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 151: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 152: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 153: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 154: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 155: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 156: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-1.6677215.2090290.208298H-0.4108800.082459-3.002126H-1.001019-6.5482516.458939H-1.5901156.0523353.188050H1.380916-1.246898-3.973244H3.592230-0.038054-2.579258H3.563657-3.5538001.625872C0.068027-0.1867430.489986C1.5001580.1808390.050611H-0.511658-0.390764-0.421280H-0.4000190.6736740.983384C4.2913141.4769503.124371C3.0442410.9743663.492847C4.6238891.5471731.769044C2.1305290.5545642.520190H2.7737490.9035454.542919C3.7119641.1302590.801144H5.5965141.9236381.464154C2.4456590.6379661.156933H1.1812670.1391242.831893H3.9872311.172832-0.246285H1.932496-0.695017-0.440057H-3.4786386.462759-1.513598H-3.9010997.3454762.290199H-3.7819995.6048103.546396H-8.498781-0.864585-3.183137H-1.676868-4.041852-6.850076H1.6510984.2002843.699984O0.8680445.0453502.048726H0.0521295.5061911.761005H-4.2353193.6082585.017018H-9.438017-3.620065-2.167606C-6.998399-4.790297-2.835486H-7.197048-4.970798-3.898027H-5.948268-5.036523-2.643148H-7.614171-5.491585-2.258416C-6.972566-3.093566-0.967004H-7.113233-2.047655-0.678615H-7.606478-3.708642-0.315655H-5.929789-3.353778-0.756482H1.023863-5.6415438.596881C1.574889-1.7149126.444642H0.726121-1.5584315.774931H1.871114-0.7562096.875906H2.417780-2.1262705.883805S1.125241-2.8088207.840112H4.9994151.8017033.881678Int2-R-SO-C1-r3C2.606200-0.523100-6.119500C1.542974-1.618112-5.986286O1.142074-2.237177-6.980578N1.088992-1.857280-4.727116C0.111100-2.908100-4.459300C-1.317600-2.345638-4.430055O-1.570296-1.321910-3.770824C0.433628-3.629505-3.124613C-0.385538-4.887116-2.925252C0.050055-6.112462-3.451607C-1.607702-4.853869-2.239250C-0.715995-7.271236-3.306121C-2.379608-6.008172-2.096702C-1.937990-7.220875-2.631474

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Page 157: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

O0.0981720.926331-2.867806O0.076276-1.2647321.420732H2.983633-0.181274-5.155310H2.1742370.325248-6.659843H1.498400-3.882959-3.148860H0.282338-2.946230-2.284952H1.002215-6.158302-3.975003H-1.942801-3.919962-1.799319H-0.356827-8.211310-3.715725H-3.321604-5.962370-1.557284H-2.535431-8.120507-2.513930H0.206070-3.621017-5.280784H-3.772496-5.228363-7.062057H-4.010041-5.247896-5.307266H-4.240966-2.811771-7.153464H-5.453209-3.380124-5.995552H-3.666267-1.407202-5.266841H-4.114946-2.655274-4.099882H-1.633694-5.024845-5.361863H2.0658231.812565-4.201572H1.5101202.942618-2.988595H3.6703352.973168-1.854675H5.730292-2.785205-3.391539H4.084153-2.197103-3.277074H2.782807-2.904750-0.935274H7.911063-2.874787-1.687102H9.340652-3.8560330.080428H5.878500-4.7915962.485384H8.345484-4.7998482.143126H6.338756-0.601213-1.989402H-2.972388-5.3505813.587676H-3.652147-2.9317697.079852H-1.659369-3.5149922.562245H-2.341907-1.0953476.045017H-0.821217-1.2950362.842029H-0.414006-5.0733658.543171H1.416536-4.7004846.105472H-0.236372-4.0752866.245661H0.546964-7.1356676.463538H-8.222052-3.320755-3.353849H-6.448908-2.038865-2.150584H-9.452956-1.054156-1.671048H1.800837-7.8173920.631558H2.683226-5.1940803.921332H0.571749-5.996359-0.492045H1.447052-3.3677702.802616H0.200060-2.1995080.981494H-2.0485509.5684351.209308H-1.7212688.5681752.642217H-4.2360648.3696090.877089H-4.4403524.6890346.408598H-5.6203934.7094275.077776H-4.1031836.6897754.886144H0.1965212.4608592.692161H-0.3744662.7913414.337421H-1.2511163.4555312.948527H0.2121825.1816715.377358H-4.5164675.295064-2.391030H-4.5553705.379851-0.621945H-3.0524062.953086-3.078451H-0.0319403.317501-0.156331H-0.8281991.972630-2.171952H-4.1814529.0758282.497672

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Page 158: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 159: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

H-0.5090313.3487582.925854H1.1511994.3438905.611626H-3.7771105.537544-1.718433H-3.5514756.076831-0.045619H-2.2335213.166012-2.197003H0.8633383.9840000.554117H0.0951602.229958-1.077094H-3.0024449.0391703.156546H-10.4070860.099446-2.433653H3.043047-0.978613-7.051825H5.300113-1.788891-4.209675H4.3351242.924363-3.315038H1.413106-8.2720802.108148H-1.412035-8.1021987.256895H1.8094985.7321644.727917H-4.563211-5.0035285.596597H-0.7138185.8882200.716685H-0.3438700.348212-3.520262H-1.872137-6.8858426.054914H-0.4901125.9474543.726527H1.126412-1.376050-4.209613H3.522487-0.521915-2.685021H4.514783-2.4159462.264177C-0.310689-0.3155710.136172C1.1367860.116766-0.241541H-0.872149-0.323529-0.810170H-0.7655100.4486310.779796C3.9065050.8114783.059954C3.019252-0.2672633.106088C3.8711301.6689931.960147C2.122381-0.4982632.060265H3.022273-0.9355473.963934C2.9589421.4481640.925876H4.5458642.5192711.908065C2.0731250.3624400.949343H1.453035-1.3469162.107806H2.9102182.1273040.083797H1.559880-0.725681-0.813699H-2.6678366.871102-1.356680H-2.4695387.3890192.788486H-2.7904495.6374074.026410H-8.9174460.319619-3.360781H-2.390435-3.457491-7.117274H-3.7477313.7571355.403079H2.4266643.4970503.788617O1.8059704.7428582.328143H1.1717315.4917092.227954H-9.431909-1.937197-1.323852C-7.335302-3.458300-2.353751H-7.864067-3.910034-3.200828H-6.277847-3.733434-2.430361H-7.728858-3.913307-1.436020C-6.718090-1.315012-1.171539H-6.772145-0.222132-1.169942H-7.096264-1.669820-0.204459H-5.660325-1.591708-1.235075H0.652066-6.7940057.820679S1.352075-3.9839967.265237C1.821789-2.8843305.881304H2.394264-2.0591376.310085H2.445431-3.4154265.157843H0.938060-2.4841215.378688H4.6097030.9817403.870655

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Page 160: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 161: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 162: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 163: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 164: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 165: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 166: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

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Page 167: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

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Page 168: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-1.821577-3.888568-1.848521H-0.126287-8.176780-3.676706H-3.200082-5.937088-1.666618H-2.359568-8.093541-2.579124H0.563254-3.640378-5.222470H-3.304422-5.300625-7.203388H-3.677434-5.231413-5.473695H-3.722241-2.887021-7.448110H-5.030549-3.379083-6.362226H-3.263325-1.397069-5.598247H-3.834994-2.569852-4.407342H-1.296467-5.044280-5.361308H2.4119162.072972-4.305857H1.7008783.162863-3.144869H3.6289492.887663-1.612543H6.077729-2.713305-2.798869H4.394846-2.236700-2.894763H2.964728-2.961584-0.687700H8.074201-2.065006-0.789380H9.361952-2.5267441.271321H5.781428-3.7641363.341166H8.237686-3.3610203.314993H6.559606-0.361825-1.803624H-2.617198-5.6211633.717813H-4.176652-2.8950686.658433H-1.565680-3.7335782.511473H-3.121210-1.0072215.443211H-1.175658-1.3335522.515707H-0.560731-5.4333658.814128H0.944536-4.4173436.337389H-0.753719-4.0757526.710245H0.431720-6.9755876.336712H-8.283179-3.713000-3.465613H-6.359665-2.582096-2.346894H-9.193294-1.117850-2.079115H2.208793-7.7520550.630004H2.484421-5.2406134.108739H1.006147-5.958265-0.570303H1.272296-3.4421582.910870H0.224318-2.1905520.861987H-2.6531859.9922571.809140H-2.5334178.9737723.238322H-4.0702898.2267540.677845H-4.8820454.7340016.318192H-6.0022264.8924284.946896H-4.2078416.6146644.744895H0.4201102.9149512.111884H-0.3311502.8121633.708548H-1.1332993.7225392.419159H-0.0710944.9080005.333810H-4.4537374.753374-2.325318H-4.4889845.397880-0.675278H-2.2763662.932483-2.618041H0.3018904.6922000.217143H0.1095082.610176-1.310211H-4.7940788.6759262.226055H-9.837298-1.799860-3.573904H3.744703-0.776321-6.616848H6.268756-0.532456-3.522955H4.0572433.536917-3.186938H2.969633-7.4157892.986155H-0.334416-7.6931987.762415H0.3843696.4408504.571951

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Page 169: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

Organic&BiomolecularChemistry SUPPORTINGINFORMATION

C-2.882712-6.266904-2.502221N-2.125495-2.582771-5.632629C-2.136600-3.968600-6.174200C-3.605714-4.177145-6.561820C-4.072068-2.770852-6.968731C-3.371938-1.859496-5.954130C3.6933002.621400-2.724800C4.6087621.512863-3.260876O5.0650671.585422-4.407396C2.3487882.675769-3.479221C1.5422241.387704-3.455008O0.9792641.429327-0.004587O1.9013340.353875-2.907117N4.8895340.484043-2.413005C5.661700-0.688600-2.821900C4.891397-2.024615-2.793871C4.791184-2.672465-1.442702C3.653328-2.905199-0.704376C5.882523-3.235389-0.681795C5.322186-3.7857560.508193C7.269866-3.352450-0.891170N3.966819-3.5622750.466452C6.104856-4.4304051.474244C8.049641-3.9918240.066202C7.472216-4.5241061.238883C-3.446700-4.6022005.115400C-2.697932-4.6168723.935005C-3.594932-3.3959025.807952C-2.095620-3.4562583.447475C-2.996899-2.2282095.336502C-2.235039-2.2479764.154552O-1.676193-1.0867653.744436C-0.263300-7.1672006.751200C0.180590-6.1107747.768965C0.213106-4.7083247.157685C-9.097700-1.356500-2.780600C-8.634190-2.089185-1.516647C-7.113723-2.057480-1.264543C2.300700-6.8469001.982900C2.212384-5.6923662.766773C1.618485-6.8767540.759696C1.476166-4.5834482.341670C0.878038-5.7851430.322252C0.785048-4.5878441.091106O0.102636-3.5611270.650629C-3.6275008.1837002.248300C-2.3088738.8623992.621000C-1.0745828.1953951.992355O-1.1307046.8974991.936756O-0.1220018.8906081.619925C-3.6747005.4008004.878700C-2.2202515.0919325.282843O-1.9683054.5205456.350926C-4.6562004.4633005.593100N-1.2614875.4905114.410593C0.1604005.2199004.621800C0.8572904.5556063.422458C0.0867163.3384442.911558C-3.8102005.499300-1.250000C-2.4858824.816007-1.101756C-1.9527373.691657-1.693090N-1.4947345.271088-0.253262C-0.4408464.426672-0.356659

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Page 170: Organic & Biomolecular ChemistryThe epoxide substrates used to model the mechanisms were the racemic styrene oxide (rac-SO) and its racemic para nitro substituted derivative (rac-p-NSO,

SUPPORTINGINFORMATION Organic&BiomolecularChemistry

H-4.4757818.6431892.768252H-10.176091-1.476090-2.930262H3.280681-0.392789-7.051976H5.995956-0.473576-3.838821H4.2116733.572325-2.873033H2.880351-7.7021802.317807H-0.285889-8.1637907.204053H0.6926316.1514744.857657H-3.914730-5.5104485.483351H-1.5277476.0282740.448461H-0.0776900.617002-4.163230H-1.265395-6.9474956.367682H-1.5075815.9903003.551405H1.542375-1.222725-4.032669H4.3422250.414023-1.566573H3.284260-3.8972551.140460C0.1957630.4596150.666504C1.090692-0.5514541.409904H-0.420039-0.121236-0.037943H-0.4857240.9184101.399634C3.7688411.2759034.298011C2.6068450.6318134.727493C4.0602521.3238402.932182C1.7430230.0406903.801604H2.3706550.5868495.787418C3.1957720.7324202.010415H4.9643781.8166212.584746C2.0233720.0886862.430092H0.843072-0.4605434.139615H3.4245560.7755400.950476

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