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Chemistry Lettershttp://www.csj.jp/journals/chem-lett/
Vol.39 No.9 CMLTAGSeptember, 2010 ISSN 0366-7022
Copyright © 2010 The Chemical Society of Japan
Highlight Review
908 Bifunctional Organometallic Catalysis andReactivity Using Heterocyclic Phosphinesand Metallated Heterocycles
C
C
R
H
Ph2P Ru
C
Cp
PPh2
CHNN
Rt -But -Bu
H2O Ph2P Ru
C
Cp
PPh2
CH2 HNN O
R t -But -Bu
C
CH2 O
R
Hcatalyst
Douglas B. Grotjahndoi:10.1246/cl.2010.908
Pyridyl- and imidazolylphosphines accelerate anti-Markovnikov alkyne hydration and alkene isomerization and deuteration byfactors of 1000 to more than 10000. Evidence for proton transfer and hydrogen bonding in catalytic intermediates comes fromcomputational, mechanistic, and structural studies. Related concepts are being applied to a novel class of protic N-heterocycliccarbene complexes which feature an unusual NH group.
Letter
915 Photocatalytic Styrene Polymerization byNovel Bichromophoric Pd Catalyst HavingLong Excited-state Lifetime
Kei Murata, Masaharu Ito, Akiko Inagaki,* andMunetaka Akita*doi:10.1246/cl.2010.915Electronic Supporting Information
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
918 Highly Active Cs2O/Ru/Pr6O11 as a Catalystfor Ammonia Decomposition
0
20
40
60
80
100
473 523 573 623 673 723 773
Cs2ORb2OK2ONa2O
Li2ONon-
Ru/Pr6O11
Ru/La2O3Cs2ONon-
NH
3co
nver
sion
/%
Temperature/K
equilibrium
Katsutoshi Nagaoka,* Kyoko Honda, MegumiIbuki, Katsutoshi Sato, and Yusaku Takitadoi:10.1246/cl.2010.918Electronic Supporting Information
920 Synthesis of Dichlorobis(1,4-dimesityl-1H-1,2,3-triazol-5-ylidene)palladium [PdCl2-(TMes)2] and Its Application to SuzukiMiyaura Coupling Reaction
Tatsuhito Nakamura, Kenichi Ogata, andShin-ichi Fukuzawa*doi:10.1246/cl.2010.920Electronic Supporting Information
923 Peculiar Wettability Based on OrientationalChange of Self-assembled HemisphericalPAMAM Dendrimer Layer
Tomohiro Fukuda, Erino Matsumoto, NobuhikoYui, and Yoshiko Miura*doi:10.1246/cl.2010.923Electronic Supporting Information
926 Turn-on Detection of Targeted BiochemicalReactions by Triple Resonance NMR Anal-ysis Using Isotope-labeled Probe
Keigo Mizusawa, Ryuji Igarashi, Kosei Uehira,Yoshimasa Takafuji, Yasuhiko Tabata, HidehitoTochio, Masahiro Shirakawa,* ShinsukeSando,* and Yasuhiro Aoyama*doi:10.1246/cl.2010.926Electronic Supporting Information
929 Redox Catalysis of Halide Ion for FormalCross-dehydrogenative Coupling: BromideIon-catalyzed Direct Oxidative ¡-Acetoxyla-tion of Ketones
O
RR'
H
H
Br− catO
RR'
OAc
Bromide ion-catalyzed oxidative coupling
AcO
[O]
Takashi Nagano,* Zhenhua Jia, Xingshu Li,Ming Yan, Gui Lu, Albert S. C. Chan,* andTamio Hayashi*doi:10.1246/cl.2010.929Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010)C-102
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
932 Sub-picosecond UV-pump and IR-probeSpectroscopy of 9-Fluorenone in DeuteratedAcetonitrile and Methanol
UV Pump Pulse Transient IR absorption spectra
IR Probe Pulse
5
4
3
2
1
0
Del
ta A
bs. /
mO
D
15801560154015201500
Wavenumber / cm−1
2 ps8 ps20 ps50 ps
Satori Hirai, Motohiro Banno, Kaoru Ohta,*Dipak K. Palit, and Keisuke Tominaga*doi:10.1246/cl.2010.932
935 Preparation of Dispersible Chitosan Par-ticles with Borate Crosslinking for Anti-microbial and Antifungal Application
NH3+
O
HO
O
NH3+
OH
HO
O
O
NH3+
O
HO
O
NH3+
OH
HO
O
O
O
B-
HO
HO O
OH
HO
O
O
NH3+ n
+B
HO OH
HO OH-
Chitosan-boric acid complex
Shoji Nagaoka,* Kanako Saita, SeitaroKobayashi, Maki Horikawa, TomohiroShirosaki, Makoto Takafuji, and HirotakaIhara*doi:10.1246/cl.2010.935Electronic Supporting Information
938 Synthesis of Siloxene Derivatives with Or-ganic Groups
Si
Si
Si
Si
Si
Si
Si Si Si
H H HSiSiSi
H O H
H HH HO H
HCl
R : OMe
O
ROH
(CH2)11
Si
Si
Si
Si
Si
Si
Si Si Si
SiSiSi
Ca Ca Ca
Si
Si
Si
Si
Si
Si
Si Si Si
SiSiSi
Ca Ca Ca
Si
Si
Si
Si
Si
Si
Si Si Si
SiSiSi
Ca Ca CaCa Ca Ca
Si
Si
Si
Si
Si
Si
Si Si Si
H O HSiSiSi
H H H
O HH HH HR
Si
Si
Si
Si
Si
Si
Si Si Si
H HSiSiSi
H O H
H OH HH H
R
-CaCl2
CaSi2
Organosiloxene
R
R
R
n
n
H
R
Yusuke Sugiyama,* Hirotaka Okamoto, andHideyuki Nakano*doi:10.1246/cl.2010.938Electronic Supporting Information
940 NO Insertion Reaction of Ethyl(nitrosyl)-ruthenium Complex Having Hydrotris(pyr-azolyl)borate and Conversion to Acetaldox-ime and Acetonitrile Complexes
2
O
BNN
NN
H
Ru
NN
NCl
benzene,reflux
PPh3
3
BNN
NN
H
Ru
NN
NCl
PPh3O
4
BNN
NN
H
Ru
NN
NCl
PPh3OH
5
BNN
NN
H
Ru
NN
NCl
PPh3
B
NN
NNHRu NN
Cl
NB
N N
NH RuN
Cl
O
N O
6
benzene,reflux
N
N
Yasuhiro Arikawa,* Shin-ya Tashita, SosekiYamaguchi, Hitomi Miyahara, Taiki Asayama,Keisuke Umakoshi, and Masayoshi Onishidoi:10.1246/cl.2010.940Electronic Supporting Information
942 Aqueous Synthesis of Highly LuminescentAmorphous CdSe Quantum Dots at LowTemperature
PL spectra of CdSe QDs obtained at different temperatures by water bath. Images underirradiation of a handheld ultraviolet lamp, excitation wavelength is 365 nm.
Lianxiang Song, Junling Duan, and JinhuaZhan*doi:10.1246/cl.2010.942Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010) C-103
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
944 Fabrication of 3D Co3O4 Homoarchitecturesvia a Novel Template-assisted Coprecipita-tion Process
The 3D Co3O4 hierarchical structures are
and electronics. We have developed
secondary Co3O4 nanowire arrays on
attractive for potential applications aslithium batteries, gas sensor, catalyst,
an effective method to synthesize
primary homogeneous fiber substrates.Chao Pan,* Yonggang Wang, Jieshan Qiu,*Bing Qu, and Jing Wangdoi:10.1246/cl.2010.944Electronic Supporting Information
946 Self-coordinated Phthalocyanine Nanoaggre-gates
Mutsumi Kimura,* Tatsuya Hatanaka, YokoTatewaki, Tadashi Fukawa, and Hirofusa Shiraidoi:10.1246/cl.2010.946
948 Synthesis of Boron-containing CDS-1 Zeoliteby Topotactic DehydrationCondensation of[B]-PLS-1 Prepared from Layered SilicateH-LDS
H-LDS [B]-PLS-1 [B]-CDS-1B
calcinationDry Gel
Conversion
(010) (100)(100)
Kenichi Komura,* Tomoyuki Murase,Yoshihiro Sugi, and Mamoru Koketsudoi:10.1246/cl.2010.948Electronic Supporting Information
950 Indigo Dye as a Positive-electrode Materialfor Rechargeable Lithium Batteries
Masaru Yao,* Miho Araki, Hiroshi Senoh,Shin-ichi Yamazaki, Tetsuo Sakai, and KazuakiYasudadoi:10.1246/cl.2010.950Electronic Supporting Information
953 Intramolecular Excitation Energy Transferfrom Visible-light Absorbing ChlorophyllDerivatives to a Near-infrared-light EmittingBoron Dipyrromethene Moiety
NH N
HNN
O
N
N
N
O
O
BF
F
OO
O
O
Visiblelight
Near-infrared
light
Energy transfer
Yumiko Kataoka, Yutaka Shibata, and HitoshiTamiaki*doi:10.1246/cl.2010.953Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010)C-104
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
956 Photochromic Nucleobase Photoisomerizedby Visible Light
Shinzi Ogasawara,* Syoji Ito, HiroshiMiyasaka, and Mizuo Maedadoi:10.1246/cl.2010.956Electronic Supporting Information
958 LiquidLiquid Relaxation in the Super-cooled Liquid State of Ethylbenzene: Ther-mal Studies Using a Prototype DTA Sensorfor the Study of Vapor-deposited Samples A DTA sensor was fabricated for the in situ study
deposited in a high vacuum. Using this, the optical
of ethylbenzene was confirmed to accompany a
of structural relaxation of molecular glass vapor-
anomaly observed for the supercooled liquid state
liquid-to-liquid relaxation phenomenon.
Kikujiro Ishii,* Yuki Yokoyama, RyoMoriyama, and Hideyuki Nakayamadoi:10.1246/cl.2010.958
961 Supercritical Hydrothermal Synthesis ofCarboxylic Acid-surface-functionalized TiO2
Nanocrystals: pH Sensitive Dispersion andHybridization with Organic Compounds
Highly surface functionalized TiO2 (anatase) nanocrystals were synthesized by supercriticalhydrothermal method. The surface modifier layer of the TiO2 nanocrystal revealedextraordinarily high thermal and chemical stability. Because of the functional modification,the TiO2 nanocrystals showed sharp pH sensitivie dispersion.
Toshihiko Arita,* Ken-ichi Moriya, KimitakaMinami, Takashi Naka, and TadafumiAdschiri*doi:10.1246/cl.2010.961Electronic Supporting Information
964 Epitaxial Growth of Faceted Co Nanopar-ticles on Sapphire Surfaces
Yui Ogawa, Hiroki Ago,* and Masaharu Tsujidoi:10.1246/cl.2010.964
966 Synthesis and CO2 Absorption Properties ofSingle-phase Li2CuO2 as a CO2 Absorbent
Mass change of the single-phase Li2CuO2
synthesized with quenching rate of 24.5°C s−1 was measured under 100 vol %CO2 atmosphere from room temperatureto 1000 °C at 5 °C min−1 of the heatingrate. The measured maximum massincrease was 40.2 mass %, which wasconsistent with the theoretical valuecalculated from the following reaction.
Li2CuO2(s) + CO2(g) CuO(s) + Li2CO3(s)
Yusuke Matsukura, Takeshi Okumura, RyotaKobayashi, and Katsuyoshi Oh-ishi*doi:10.1246/cl.2010.966
Chemistry Letters Vol.39, No.9 (2010) C-105
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
968 Resolution of 1,2,3,3a,4,8b-Hexahydrocyclo-penta[b]indole via Diastereomeric Salt For-mation with N-Tosyl-(R)-phenylglycine
rac-1
NH
COOH
HN Ts
NH
NH
(R )-2
(3aS,8bS )-1
(3aR,8bR )-1EtOH
+
+
seeding
seeding
(3aR,8bR )-1 / (R )-2 salt
(3aS,8bS )-1 / (R )-2 salt
Shinji Higashijima,* Yukiko Inoue, TakayaMaehashi, Hidetoshi Miura, Yasuhiro Kubota,Kazumasa Funabiki, and Masaki Matsuidoi:10.1246/cl.2010.968Electronic Supporting Information
970 Control of Ag+ Permeation by Na+ Concen-tration on the Basis of Volume Change inPoly(acrylic acid) Gel
Kazutake Takada,* Atsushi Shibata, and AkioYuchidoi:10.1246/cl.2010.970Electronic Supporting Information
972 Selective Methanation of CO in ReformateGas over Ni/TiO2 Catalyst
Selective methanation of CO was performed over Ni/TiO2. CO in reformate gas was completelyremoved at 150–300 °C. The CH4 concentration in the outlet gas could be maintained below 1%in the whole temperature region because Ni/TiO2 suppressed the CO2 methanation. It can beconsidered that the formation of CO by the reverse water-gas-shift reaction is blocked by theapplication of TiO2 to the support of Ni catalyst and that it results in the high CO/CO2
selectivity of Ni/TiO2.
10wt%Ni/TiO2
10wt%Ni/Al2O3
10wt%Co/TiO2
0.5wt%Ru/Al2O3
0
0.05
0.1
0.15
0.2
0.25
150 200 250 300Temperature / °C
CO
con
cent
ratio
n / %
0
0.5
1
1.5
2
2.5
3
150 200 250 300Temperature / °C
CH
4 c
once
ntra
tion
/ %
Kohei Urasaki, Yuta Tanpo, Tomoki Takahiro,Jayaraj Christopher, Ryuji Kikuchi, ToshinoriKojima, and Shigeo Satokawa*doi:10.1246/cl.2010.972
974 Morphology of Rare-earth (Y, Sm) Nano-structures Synthesized by the Surfactant-assembled Method
Katsura Nishiyama,* Takashi Hanamoto,Hirotake Shigematsu, Keitaro Kitada, KaiIketaki, Toshihiko Kaji, and Masahiro Hiramotodoi:10.1246/cl.2010.974
976 Effect of Surface-oxidized Structure of Sin-gle-walled Carbon Nanotubes on Hetero-geneous Direct Electron-transfer Reactionof Cytochrome c
No redox wave of cytochrome c was
redox wave of cytochrome c with
observed at UV−ozone-treated SWCNT-
observed at Au electrode modified withas-grown SWCNTs. Well-defined
diffusion-controlled process was
modified Au electrode. Masato Tominaga,* Hiroyuki Yamaguchi,Shingo Sakamoto, and Isao Taniguchidoi:10.1246/cl.2010.976
Chemistry Letters Vol.39, No.9 (2010)C-106
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
978 Thermally Two-stepped Spin TransitionsInduced by Intramolecular Electron Trans-fers in a Cyanide-bridged Molecular Square
Masayuki Nihei, Yoshihiro Sekine, NaokiSuganami, and Hiroki Oshio*doi:10.1246/cl.2010.978Electronic Supporting Information
980 Facile Synthesis of Hierarchical AluminaMonoliths with Tubular Macropores andOrdered Mesoporous Walls
Nonwoven fabric was employed as themacropore template, leading to the formationof alumina monolith with hierarchicallymacro/mesoporous structure. The incorporation
ordered mesoporous alumina, and the obtainedmonolith shows high thermal stability up to900 °C.
of macropores does not disturb the regularity of
Kuibao Zhang, Zhengyi Fu,* Jinyong Zhang,Tadachika Nakayama, Koichi Niihara, andSooWohn Leedoi:10.1246/cl.2010.980
983 Study on a Novel Two-dimensional HPLCand Wide-bore Electrophoresis System
By precisely fixing the inner cooling capillary to the center of a quartz tube and introducing asolitary injection capillary, a new and better wide-bore electrophoresis (WBE) system wasbuilt and has shown great potential. Further, a novel high-performance two-dimensional hybridof HPLC and WBE (HPLC–WBE) was developed with a injection valve as the interface.High-resolution separations were observed in both the improved WBE system and the2D HPLC–WBE system.
Youxin Li, Xin Fang, Shibin Zhao, TingtingZhai, Xiaochun Sun, and James Jianmin Bao*doi:10.1246/cl.2010.983Electronic Supporting Information
986 Seven-coordinate Rhenium(III) Complexeswith a Labile Coordination Site Assembledon Indium-doped Tin Oxide (ITO) Elec-trodes: Catalytic Reduction of Dioxygen toHydrogen Peroxide
Hideki Sugimoto,* Hiroyuki Tano, HiroyukiMiyake, and Shinobu Itoh*doi:10.1246/cl.2010.986Electronic Supporting Information
989 Synthesis and Properties of 1,3-Dithiole-[5]dendralenes with Two Thiophene Spacers
S S
S SS S S S
SS SS
S S
SS SSS S
SS SS+
+
+
+
S S
S SS S S S
SS SS+
+
+
+
S S
S SS S S
SS SS+
• •
+
+
+
32+ 34+
36+
S S
S SS SS S
SS SS+
+
+
++
•
35+•
−2e
+2e
−2e
+2e
−e
+e
−e
+e
3
Hiroaki Horiuchi and Yohji Misaki*doi:10.1246/cl.2010.989Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010) C-107
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
992 Label-free Biosensor Using Polyion-modifiedGold Nanorods Adsorbed on a Glass Sub-strate
Antigen−antibody binding resulted in the peak shifts (44 nm) of the SP band shift of polyion-modified gold nanorods on a glass substrate.
Kanako Honda,* Hirofumi Kawazumi,Naotoshi Nakashima, and Yasuro Niidome*doi:10.1246/cl.2010.992
994 Fabrication and Enhanced Rectifying Per-formance of Zn1¹xCoxO Nanowall VerticallyGrowing on Si Wafer
ZnO and Co-doped ZnO mesocrystalline nanowall/p-Si heterojunctions are prepared bya chemical precursor route, which exhibits a rectifying behavior with a lower turn-onvoltage tuned by Co2+ dopant concentration.
-2 -1 0 1 2
0.0
0.6
1.2
1.8
2.4
3.0
Bias Voltage/V
ZnOZn
0.993Co
0.007O
Zn0.986
Co0.014
O
Cu
rren
t/m
A
Guoxing Zhu, Yuanjun Liu, Chi Zhang,Zonglong Zhu, and Zheng Xu*doi:10.1246/cl.2010.994Electronic Supporting Information
996 Gel-phase Extraction for the Removal ofHeavy-metal Ions
Heavy-metal ions permeate across anion-exchange membrane and are fixedin the gel phase containing precipitating
are co-ions of the ion-exchangemembrane.
reagents or chelating reagents, which
Manabu Igawa,* Hirohito Kanamori, and BenNanzaidoi:10.1246/cl.2010.996
998 A Novel Method to Discriminate betweenPlant- and Petroleum-derived Plastics byStable Carbon Isotope Analysis
C3 plants
-35
-30
-25
-20
-15
-10
-5
C
arbo
n is
otop
ic c
ompo
sitio
n (‰
, vs.
PD
B)
Corn(C4 plant)
Rice(C3 plant)
Plastic(Rice)
Plastic(Corn)
Plastic(Petroleum)
Sugarcane(C4 plant)
Potato(C3 plant)
Wheat(C3 plant)
Corn-derivedplastic
Petroleum-derivedplastic
Rice-derivedplastic
C4 plants
Yaeko Suzuki,* Fumikazu Akamatsu, RumikoNakashita, and Takashi Korenagadoi:10.1246/cl.2010.998
1000 Covalent Attachment of Organic Groupsonto Single-walled Carbon Nanotubes viaCopper(I)-promoted Radical Addition
R-Cl
CuCl, bPy, CuR
n
Yongsheng Li,* Chunhua Xu, and Yaomin Xudoi:10.1246/cl.2010.1000Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010)C-108
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
1002 Synthetic Studies on the Natural MultidrugResistance Modulator, Irciniasulfonic Acid B
Synthetic studies on the natural MDR modulator irciniasulfonic acid (ISA)-B utilizing crossmetathesis and the Horner−Wadsworth−Emmons olefination.
O
OH
OH
O
OH
NH
O
OH
SO3H
Chisato Emura, Ryuichi Higuchi, andTomofumi Miyamoto*doi:10.1246/cl.2010.1002
1004 Reversible Aggregation and Deaggregationof Helicene-grafted Chiral Silica Nanopar-ticles Induced by Aromatic Solvents
Silica nanoparticles of 210 and 440-nm sizes were grafted with (P)- and (Mn)-1,12-
trimethoxysilane. The chiral nanoparticles deaggregated and aggregated in soft and hardaromatic solvents. When sonicated in iodobenzene, a soft solvent, the nanoparticles weredispersed at a concentration of 0.2nmgnmL-1. In hard benzotrifluoride, aggregation occurred,forming blocks of 5600nnm size. In bromobenzene, chlorobenzene, and toluene, aggregates
dimethylbenzo[c]phenanthrenes by silane coupling with helicenamidated (3-aminopropyl)-
of intermediate sizes were formed. The process was reversible, and when blocks formed inbenzotrifluoride were sonicated in iodobenzene, bromobenzene, chlorobenzene, and toluene,smaller aggregates formed. The CD spectra of the aggregates exhibited larger Cotton effects.
Zengjian An, Yoshizumi Yasui, TakanariTogashi, Tadafumi Adschiri, Shunpei Hitosugi,Hiroyuki Isobe, Takeshi Higuchi, MasatsuguShimomura, and Masahiko Yamaguchi*doi:10.1246/cl.2010.1004Electronic Supporting Information
1006 Trialkyl(pentafluorocyclotriphosphazenyl)-ammonium Bis(trifluoromethylsulfonyl)-imide Acting as Nonflammable Room-tem-perature Ionic Liquids
N
N
PN
P
NP
F
F
F
F
F
R1
R2
R2
ClN
PN
P
NP
ClF
F
F
F
F
N
O
O
CF3S
O
O3C
Et2O CHCl3
NR1R22 Li+TFSI-
[Nmnn Cpz][Cl]Cpz-Cl
N444Cpz; m = n = 4
TFSI- = F
N888Cpz; m = n = 8
N411Cpz; m = 4, n = 1
N611Cpz; m = 6, n = 1
[Nmnn Cpz][TFSI]
R1 = -(CH2)m-H
R2 = -(CH2)n-H
S
Tsutomu Shiragami,* Yoko Nakamura, JinMatsumoto, Masashi Otsuki, and MasahideYasudadoi:10.1246/cl.2010.1006Electronic Supporting Information
1008 PEGylated Polymer Micelle-based NitricOxide (NO) Photodonor with NO-mediatedAntitumor Activity
Naoki Kanayama, Kazuhiro Yamaguchi, andYukio Nagasaki*doi:10.1246/cl.2010.1008Electronic Supporting Information
1010 A Facile Approach for Preparing Poly-methylphenylsilsesquioxane with Well-de-fined Ladder Structure via NonhydrolyticCondensation Well-ordered ladder-like poly-
methylphenylsilsesquioxane wassynthesized by a nonhydrolyticcondensation approach for the firsttime, which is easy to carry out withreadily available starting materials.Xiu Wei Jia, Min Zhi Rong,* Ming Qiu
Zhang,* and Xiao Ji Yedoi:10.1246/cl.2010.1010Electronic Supporting Information
Chemistry Letters Vol.39, No.9 (2010) C-109
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
1013 Asymmetric Allylation of Aldehydes Cata-lyzed by Simple Dual Small Organic Mole-cules: L-Proline and L-Prolinol
A novel and simple methodology for the asymmetric allylation of aldehydes was reported.Double small organic molecules such as L-proline and L-prolinol were first employed forproviding chiral environment so as to afford the chiral homoallylic alcohols in high yieldsand moderate enantioselectivities in our protocol.
+R-CHO4ÅMS, CH2Cl2
Ph
OH
**SnBr
2.0 equiv L-proline
–78 °C, 10 h
1.1 equiv L-prolinol
3
Yield 64-90%ee 32-64%
Guo-hong Chen, Ling-yan Liu,* Xiao-ningWei, Wei-xing Chang, and Jing Li*doi:10.1246/cl.2010.1013
1016 Trifluoromethanesulfonate Anion-linkedSupramolecular Frameworks of Cucurbit-[5]uril and Cucurbit[7]uril
Two crystals based on cucurbit[5]uril
acid and structurally determined bysingle-crystal X-ray diffraction analyses.These two crystal structuresdemonstrated that the highly orderedtrifluoromethanesulfonate anions playessential roles in the formation ofthree-dimensionalframeworks with 1D channels.
and cucurbit[7]uril have beensynthesized in trifluoromethanesulfonic
supramolecularJie Zhang, Huifang Ren, and Li Liu*doi:10.1246/cl.2010.1016Electronic Supporting Information
1018 Preparation of Well-defined Nanometer-sized Layered Double Hydroxides by NovelpH Adjustment Method Using Ion-exchangeResin
Konomi Nitoh, Andre Ayral, and MakotoOgawa*doi:10.1246/cl.2010.1018
Chemistry Letters Vol.39, No.9 (2010)C-110
http://www.csj.jp/journals/chem-lett/Copyright © 2010 The Chemical Society of Japan
