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Faculty details profile for IIU Web-site
Name Dr. Bubun Banerjee Photograph Designation Assistant Professor
Address Department of Chemistry, Indus International University, V.P.O-Bathu, Dist. Una, Himachal Pradesh, Pin Code- 174301, India
Phone No. 8582804332
E-mail bubun.banerjee@iiuedu.in, banerjeebubun@gmail.com
Educational Qualification Degree Institution University Year Branch
Ph.D Dept. of Chemistry,
Visva-Bharati (a central University)
Visva-Bharati (a central University)
2016 Organic Synthesis
M. Sc Ram Jas College, New Delhi
University of Delhi 2010 Organic Chemistry
B. Sc St. Xavier’s College,
Kolkata University of Calcutta 2008 Chemistry
(Hons.)
Qualified CSIR-UGC NET EXAMINATION held on June 2010
Title of the PhD thesis: “Development of some new organic methodologies with special emphasis on greener aspects” PhD supervisor: Prof. (Dr.) Goutam Brahmachari, Department of Chemistry, Siksha Bhavana, Visva Bharati University, Santiniketan, West Bengal, India. Teaching experience: Taking classes of B. Sc, M. Sc, and B. Tech students
Research Interests: Research work based on the fields of Organic Synthesis (Viz, synthetic methodologies, semi synthesis and total synthesis). Research Achievements: 1. Synthesis of densely functionalized 2-amino-3-cyano-4H-pyrans and pyran annulated heterocyclic scaffolds
Ref. ACS Sustainable Chem. Eng., 2014, 2, 411-422.
2. Sulfamic acid-catalyzed one-pot access of 3,3-bis(indol-3-yl)indolin-2-ones and 2,2-bis(indol-3-yl)acenaphthylen-1(2H)-one derivatives
2,2-Bis(indol-3-yl)acenaphthylen-1(2H)-one
3,3-Bis(indol-3-yl)indolin-2-ones
Indoles (2 equiv)
4 entries (yield: 89-93%)
isatins (1equiv)
23 entries (yield: 82-94%)
R1,R2 = H,H; F,H; Br,H; CH3O,H;
H,CH3; COOCH3,H
EtOH:H2O (1:1 v/v)
sulfamic acid(20 mol%)
N
R2
R1
N
O O
R4
R3
rt,2-7h
O
O
R3 ,R
4 =H,H;F,H;Br,H;
Cl,H; NO 2,H; H,CH 3
N
N
N
O
R2 R2
R1 R1
R3
R4
N N
OR1 R1
R2 R2
Acenaphthaquinone(1 equiv)
ORTEP View
Ref. ACS Sustainable Chem. Eng., 2014, 2, 2802-2812.
3. Sulfamic acid-catalyzed synthesis of bis(6-aminouracil-5-yl)methane derivatives
+
R H
OSulfamic acid
(20 mol%)
No column
chromatography
Room Temp.
Aq. EtOH
Recycle
22 entries
(up to 94% yield) CCDC 968994
N
N
O
NH2O
H3C
CH3 N
N
R
N
N
NH2O
H3C
O
CH3NH2O O
CH3
CH3
(1 equv.)
(2 equv.)
-H2O(second molecule)
ONH3SO3
NN
O
OCH3H3C
H2N
NN
RN
N
NH2
O
CH3
CH3
H2N
O
H3C
OCH3
O
RH
NN
O
OCH3H3C
H2N
OR
H H
NN
O
OCH3H3C
H2N
OR
H
N
N
OO
CH3
H3C
NH2
NH2SO3
H
NH3SO3
(first molecule)
(protontransfer)
H
NH3SO3NN
O
O
CH3H3C
HN
R(intermediate)
NH2 SO3 H
NN
O
O
CH3H3C
N
R
O3SH3N
Aq. EtOH
NH2SO
3H
-NH2SO3
H
Ref. Current Organocatalysis, 2016, 3, 125-132
4. NH4Cl-Catalyzed synthesis of 1,8-dioxo-octahydroxanthenes and N-aryl-1,8-dioxo-decahydroacridines
Ref. J. Chem. Res., 2014, 38, 745-750.
5. Synthesis of biologically relevant αααα-aminonitriles under solvent-free conditions at room temperature
Ref. Asian J. Org. Chem., 2012, 1, 251-258.
6. Sustainable one-pot synthesis of a wide array of fused O- and N-heterocycles catalyzed by trisodium citrate dihydrate under ambient conditions
EtOH : H2O
(1:1, v/v), rt
CN
CN
PQP
O O
P = CH2,Q = C(CH3)2
R1 = CH3,iPr, Ph, CH3COCH2
H2N
NC
R
O NNH
R1
R1
O
OEt
O
NH2-NH2.H2O
+
HN
N
O
R1
Insitu
generated
Trisodium citrate(10 mol%)
EtOH : H2O
(1:1, v/v), rt
(A total of 80 entrieswith 81-95% yield)
N
O
OR1
OR2
O
O
NC
H2N
HN
OR-CHO
N
O
O
Trisodium citrate(10 mol%)
N
O
O
O
NC
H2N
N
O
NNH
R1
O
NC
H2N
N
O
NNH
COOR5
NH2-NH2.H2O
+
HNNH
O
COOR5
COOR5R5OOC
H2N
NC
R
O NNH
COOEt
Insitu
generated
R1 = CH3,iPr, Ph,
CH2COCH3
R1
O
OR2
O
R3
R3
R3
R3
R3
R3
P = NCH3,Q = CO
R4R4
P = CH2,Q = CH2
QP
P
O
O
NC
H2N
O
OO
PQP
O O
R2 = CH3, C2H5
R4R4
R4
R5 = Me, Et
O
NC
H2N
O
O
O
R-CHO
O
OH
O
CH3O
NC
H2N
O
O
O
O
OH
O
QP
P
O
O
NC
H2N
N
O
R3R4
O
O
O
NC
H2N
HN
O
R3
O
NC
H2N
OHN
N
O
R1
NNH
R1
Insitu
generated
O
OH
O
Ref. Asian J. Org. Chem. 2016, 5, 271-286
List of Publications: 1. Goutam Brahmachari and Bubun Banerjee, Ceric ammonium nitrate (CAN): an efficient
and eco-friendly catalyst for the one-pot synthesis of alkyl/aryl/heteroaryl-substituted bis(6-aminouracil-5-yl)methanes at room temperature. RSC Adv., 2015, 5, 39263-39269.
2. Goutam Brahmachari and Bubun Banerjee, Facile and one-pot access to diverse and densely functionalized 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocyclic scaffolds via an eco-friendly multicomponent reaction at room temperature using urea as a novel organo-catalyst. ACS Sustainable Chem. Eng., 2014, 2, 411-422.
3. Goutam Brahmachari and Bubun Banerjee, Facile and one-pot access of 3,3-bis(indol-3-yl)indolin-2-ones and 2,2-bis(indol-3-yl)acenaphthylen- 1(2H-one derivatives via an eco-friendly pseudo-multicomponent reaction at room temperature using sulfamic acid as an organo-catalyst. ACS Sustainable Chem. Eng., 2014, 2, 2802-2812.
4. Bubun Banerjee and Goutam Brahmachari, Ammonium chloride catalyzed one-pot multicomponent synthesis of 1,8-dioxo-octahydroxanthenes and N-aryl-1,8-dioxo decahydroacridines under solvent free condition. J. Chem. Res., 2014, 38, 745-750.
5. Goutam Brahmachari, Sujay Laskar and Bubun Banerjee, Eco-friendly, one-pot multicomponent synthesis of pyran annulated heterocyclic scaffolds at room temperature using ammonium or sodium formate as non-toxic catalyst. J. Heterocyclic Chem., 2014, 51, E303-E308.
6. Goutam Brahmachari and Bubun Banerjee, Facile synthesis of symmetrical bis(benzhydryl)ethers using p-toluenesulfonyl chloride under solvent-free conditions. Org. Med. Chem. Lett., 2013, 3, 1.
7. Goutam Brahmachari, Sajal Sarkar, Ranjan Ghosh, Soma Barman, Narayan C Mandal, Shyamal K. Jash, Bubun Banerjee, Rajiv Roy, Sunlight-induced rapid and efficient biogenic synthesis of silver nanoparticles using aqueous leaf extract of Ocimum sanctum Linn. with enhanced antibacterial activity. Org. Med. Chem. Lett., 2014, 4, 18.
8. Goutam Brahmachari and Bubun Banerjee, A comparison between catalyst-free and ZrOCl2·8H2O-catalyzed strecker reactions for the rapid and solvent-free one-pot synthesis of racemic �-aminonitrile derivatives. Asian J. Org. Chem., 2012, 1, 251-258.
9. Goutam Brahmachari and Bubun Banerjee, Facile and chemically sustainable one-pot synthesis of a wide array of fused O- and N-heterocycles catalyzed by trisodium citrate dihydrate under ambient conditions. Asian J. Org. Chem., 2016, 1, 271-286.
10. Goutam Brahmachari and Bubun Banerjee, Catalyst-free organic synthesis at room temperature in aqueous and non-aqueous media: An emerging field of green chemistry practice and sustainability. Current Green Chem., 2015, 2, 274-305.
11. Goutam Brahmachari and Bubun Banerjee, Sulfamic acid-catalyzed carbon-carbon and carbon-heteroatom bond forming reactions: An overview. Current Organocatalysis, 2016, 3, 93-124.
12. Bubun Banerjee, Vivek K. Gupta, Sumati Anthal, Rajni Kant and Goutam Brahmachari, Synthesis, spectroscopic characterization and X-ray analysis of symmetrical bis[bis-(4-chlorophenyl)-methyl] and bis[bis-(4-fluorophenyl)-methyl]ethers. Signpost Open Access J. Org. Biomol. Chem., 2013, 1, 23-32.
13. Sumati Anthal, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta, Trimethyl(triphenylmethoxy)silane. Acta Cryst., 2012, E68, o556.
14. Sumati Anthal, Goutam Brahmachari, Sujay Laskar, Bubun Banerjee, Rajni Kanta and Vivek K. Gupta, 2-Amino-7,7-dimethyl-5-oxo-4-(p-tolyl)- 5,6,7,8-tetrahydro-4H- chromene-3-carbonitrile. Acta Cryst., 2012, E68, o2592-o2593.
15. Naresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, Crystal structure of 5,5′[(4-fluorophenyl)methylene]bis [6-amino-1,3-dimethyl pyrimidine-2,4(1H,3H)-dione]. Acta Cryst., 2014, E70, o1098-o1099.
16. Naresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, Ethyl 6-amino-5-cyano-4-phenyl-2,4-dihydropyrano [2,3-c]pyrazole-3-carboxylate dimethyl sulphoxide monosolvate. Acta Cryst., 2014, E70, o795-o796.
17. Naresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, 6-Amino-3-methyl-4-(3,4,5-trimethoxyphenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile. Acta Cryst., 2014, E70, o875-o876.
18. Sakshi Sharma, Sujay Laskar, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta, Crystal structure of 2-(4-nitrophenyl)-2-(phenylamino)propanenitrile and 2-(4-fluorophenylamino)-2-(4-nitrophenyl)propanenitrile. Crystallography Reports, 2014, 59, 1037-1041.
19. Suresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, Synthesis, Characterization, and Crystal Structure of 2-Amino-5-oxo-4-phenyl-4,5- dihydropyrano[3,2-c]chromene-3-carbonitrile Crystallography Reports. 2015, 60, 1142-1146.
20. Suresh Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta, X-ray studies of 2-amino-5-oxo-4-propyl-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile. Crystallography Reports. 2015, 60, 865-868.
21. Suresh Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta, Synthesis, characterization and crystal structure of 2-amino-7-methyl-5-oxo-4-phenyl-4,5-dihydropyrano[3,2-c]pyran-3-carbonitrile. Crystallography Reports. 2015, 60, 1126-1130.
22. Suresh Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta. X-ray studies of 2-amino-4-(3-nitrophenyl)-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile and 2-amino-7,7-dimethyl-4-(4-nitrophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile. Crystallography Reports. 2015, 60, 1136-1141.
23. Naresh Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta. Crystal structure of 2-amino-7,7-dimethyl-5-oxo-4-(pyridin-4-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile hemihydrates. Crystallography Reports, 2015, 60, 1111-1115.
24. Sakshi Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta. Synthesis, characterization and crystal structure of 5,5"-difluoro-1H,1"H-[3,3':3',3"-terindol]-2'(1'H)-one. Crystallography Reports, 2016, 61, 225-229.
25. Suresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, Structure of 2-amino-5-oxo-4-p-tolyl-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile. Eur. Chem. Bull., 2014, 3, 654-657.
26. Balbir Kumar, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta, Structure of 5'-chloro-5,5"-difluoro-1H,1"H-[3,3':3',3" -terindol]-2'(1'H)-one. Eur. Chem. Bull., 2015, 4, 177-180.
27. Suresh Sharma, Bubun Banerjee, Goutam Brahmachari, Rajni Kant and Vivek K. Gupta, X-ray studies of methyl 6-amino-5-cyano-2-methyl-4-(3-nitrophenyl)-4H-pyran-3- carboxylate. Eur. Chem. Bull., 2015, 4, 230-233.
28. Suresh Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta. X-ray studies of 2-amino-4-isopropyl-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile. Eur. Chem. Bull., 2015, 4, 368-371.
29. Sakshi Sharma, Goutam Brahmachari, Bubun Banerjee, Rajni Kant and Vivek K. Gupta. Synthesis, spectroscopic characterization, x-ray analysis of DMSO solvated 5'-chloro-1H,1"H-[3,3':3',3"-terindol]-2'(1'H)-one. Eur. Chem. Bull., 2015, 4, 389-392.
30. Balbir Kumar, Goutam Brahmachari, Bubun Banerjee, Khondekar Nurjamal, Rajni Kant and Vivek K. Gupta. Structure of 2-amino-4-(3-bromophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile. Eur. Chem. Bull., 2016, 5, 14-17.
31. Bubun Banerjee and Goutam Brahmachari, Room temperature metal-free synthesis of aryl/heteroaryl-substituted bis(6-aminouracil-5-yl)methanes using sulfamic acid (NH2SO3H) as an efficient and eco-friendly organo-catalyst. Current Organocatalysis, 2016, 3, 125-132.
32. Goutam Brahmachari, Bubun Banerjee, Balbir Kumar, Rajni Kant and Vivek K. Gupta, Synthesis, spectroscopic characterization and X-ray analysis of racemic 2-(4-chlorophenyl)- 2-(4-fluorophenylamino)acetonitrile. J. Ind. Chem. Soc., 2015, 92, 1473-1478.
33. Sakshi Sharma, Goutam Brahmachari, Bubun Banerjee, Khondekar Nurjamal, Abhishek Kumar, Ambrish Kumar Srivastava, Neeraj Misra, Sarvesh Kumar Pandey, Rajnikant and Vivek K. Gupta, Synthesis, spectroscopic characterization and crystallographic behavior of a biologically relevant novel indole-fused heterocyclic compound d Experimental and theoretical (DFT) studies. J. Mol. Structure, 2016, 1118, 344-355.
Pin-Points [Feature articles]
1. Bubun Banerjee, Per-6-amino-β-cyclodextrin (per-6-ABCD) (Pin-point 1), Signpost
Open Access J. Org. Biomol. Chem., 2015, 3, 28-33. 2. Bubun Banerjee, Zn[(L)proline]2 (Pin-point 4), Signpost Open Access J. Org. Biomol.
Chem., 2015, 3, 80-86. 3. Bubun Banerjee, Baker’s yeast (Pin-point 5), Signpost Open Access J. Org. Biomol.
Chem., 2015, 3, 87-91.
List of Publications as a corresponding author: 1. Bubun Banerjee, Recent developments on ultrasound assisted catalyst-free organic
synthesis. Ultrason. Sonochem. 2016, in press, DOI: 10.1016/j.ultsonch.2016.09.023. 2. Bubun Banerjee, Recent developments on ultrasound-assisted one-pot multicomponent
synthesis of biologically relevant heterocycles. Ultrason. Sonochem. 2016, in press, DOI: 10.1016/j.ultsonch.2016.10.010.
3. Bubun Banerjee,. Sc(OTf)3 catalyzed carbon-carbon and carbon-heteroatom bond forming reactions: A review. Arkivoc. 2016, Accepted, MS. No. 16-9868LR.
Conference attended:
1. Goutam Brahmachari and Bubun Banerjee, Development of a novel and efficient protocol for the synthesis of symmetrical Bis(diarylmethyl)ethers using copper chloride as reusable catalyst under solvent-free conditions. “Proceedings of the Acharya Prafulla Chandra Ray Memorial Symposium on Chemistry Today (2011) and Celebration of the International Year of Chemistry” on August 2-3, 2011, Organized by The Indian Chemical Society, 92, Acharya Prafulla Chandra Road, Kolkata-700009.
2. Bubun Banerjee and Goutam Brahmachari, Rapid and solvent-free one-pot synthesis of α-aminonitriles at room temperature: comparison between catalyzed and catalyst-free conditions. In “INDO-US WORKSHOP on Green Chemistry for Environments & Sustainable Development” on 11-13th March, 2012, Organized by Department of Chemistry, Hemwati Nandan Bahuguna Garhwal (a Central University), Srinagar, Uttarakhand, India-246174.
3. Bubun Banerjee and Goutam Brahmachari, Development of an efficient MCR-protocol for the facile one-pot synthesis of biologically relevant 4H-pyran-annulated heterocyclic scaffolds at room temperature. In “International Conference on Global Opportunities for Latest Developments in Chemistry and Technology (GOLD-CT-2014)” on February 06-08, 2014 organized by School of Chemical Sciences, North Maharashtra University, Jalgaon-425001. (Got best poster award)
4. Bubun Banerjee and Goutam Brahmachari, Facile access to biologically relevant 4H-pyran-annulated heterocyclic scaffolds via one-pot multicomponent reaction at room temperature. In national seminar on “Recent Advances in Chemistry” on 9th March 2014, organized by Department of Chemistry, Visva-Bharati, Santiniketan. WB-731235.
Research Experience: 5 years of research experience and can operate NMR (400 MHz Bruker), IR, UV machine.
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