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rsamanta@chem.iitkgp.ac.in

2BR-101, IIT Campus, Kharagpur - 721302, West Bengal

Research Statement

?The ideal synthesis creates a complex skeleton..in a sequence only of successive construction reactions involving no intermediary. Refunctionalization, and leading directly to the structure of the target, not only its skeleton but also its correctly placed functionality.?[Hendrickson, J. B. J. Am. Chem. Soc. 1975, 97, 5784.] The outlook of synthetic organic chemistry is changing very rapidly. But one feature is still unique to all molecular architects i.e. the ability to design and development of new molecules. Basically, the pathways to achieve the targets are changing in synthetic organic chemistry. The challenges posed by pharmaceutical, biology and material science seek attention from synthetic chemist to provide faster, economic and environmentally acceptable solutions. Catalysis, especially transition metal catalysis has taken a lead role to provide architecturally complex molecules in more faster, milder and simpler way. We are involved in developing new transition metal catalysed synthetic technology and late stage functionalization of complex molecules. We are using these protocols to make strategies that enable the rapid formation of library of complex, unprecedented structure which can be further examined for unexplored biological properties.

Publications

Journal Publications

D. Das and R. Samanta* , " Iridium(III) Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones " Adv. Synth & Catal. 2018, 360, 379-384., 2018
A. Biswas and R. Samanta* , "Rhodium(III)-Catalyzed Regioselective Direct C4-Alkylation and C2-Annulation of Indoles: Straightforward Access to Indolopyridone " Eur. J. Org. Chem., 2018, 1426-1436., 2018
B. Ghosh, A. Biswas, S. Chakraborty and R. Samanta* , "Rh(III)-Catalyzed Direct C8-Arylation of Quinoline N-Oxides using Diazonaphthalen-2(1H)-ones: A Practical Approach towards 8-azaBINOL " Chem Asian J 2018, just accepted. (DOI: 10.1002/asia.201800462), 2018
D. Das, P. Poddar, S. Maity, and R. Samanta* , "Rhodium(III)-Catalyzed C6-Selective Arylation of 2-Pyridones and Related Heterocycles Using Quinone Diazides: Syntheses of Hetero-Arylated Phenols " J. Org. Chem. 2017, 82, 3612-3621., 2017
U. Karmakar, D. Das, and R. Samanta* , " Iridium Catalysed Cascade Synthesis of Oxindoles using Diazo Compound: A Quick Entry to the C7-Functionalized Oxindoles " Eur. J. Org. Chem. 2017, 2780-2788., 2017
A. Biswas, U. Karmakar, S. Nandi and R. Samanta* , "Copper Catalyzed Direct, Regioselective Arylamination of N-Oxides: Studies to Access Conjugated pi-Systems " J. Org. Chem. 2017, 82, 8933-8942., 2017
A. Biswas, D. Giri, D. Das, A. Dey, S. K. Patra* and R. Samanta* , "A Mild Rhodium Catalyzed Direct Synthesis of Quinolones from Pyridones: Application in the Detection of Nitroaromatics " J. Org. Chem. 2017, 82, 10989-10996., 2017
S. Maity, U. Karmakar and R. Samanta* , "Regiocontrolled Direct C4 and C2-Methyl Thiolation of Indoles under Rhodium Catalyzed Mild Conditions " Chem. Commun. 2017, 53, 12197-12200., 2017
D. Das, A. Biswas, U. Karmakar, S. Chand, and R. Samanta* , "C6-Selective Direct Alkylation of Pyridones with Diazo Compounds under Rh(III)-Catalyzed Mild Conditions " J. Org. Chem. 2016, 81, 842-848., 2016
A. Biswas, U. Karmakar, A. Pal, and R. Samanta* , "Copper Catalyzed Regioselective Cascade Alkylation and Cyclocondensation of Quinoline N-Oxides with Diazo esters: Direct Access to conjugated pi-Systems " Chem. Eur. J. 2016, 22, 13826-13830., 2016
R. Samanta, R. Narayan, J. O. Bauer, C. Strohmann, S. Sievers, A.P. Antonchick* , "Oxidative Regioselective Amination of Chromones Exposes Potent Inhibitors of Hedgehog Signaling Pathway " Chem. Commun. 2015, 51, 925-928., 2015
R. Samanta, K. Matcha and A. P. Antonchick* , "Metal-Free Oxidative Carbon-Heteroatom Bond Formation via C-H Bond Functionalization " Eur. J. Org. Chem., 2013, 5769-5804. , 2013
Z. Song, R. Samanta, A. P. Antonchick* , "Rhodium(III)-Catalyzed Direct Regioselective Synthesis of 7-Substituted Indoles " Org. Lett, 2013, 15, 5662-5665., 2013

Projects

Seed Grant
Client: ISIRD-SRIC, IITKGP
PI: Rajarshi Samanta  |  Co-Consultant(s):
NEW POLYMERS AND POLYMER COMPOSITES: DESIGN, SYNTHESIS AND ADVANCED APPLICATIONS (SGDRI)
Client: SRIC, IIT Kharagpur
PI: Prof. T. Pathak, Dr. D. Dhara  |  Co-Consultant(s): part of 16 membered departmental team
Young Scientist Scheme
Client: DST
PI: R. Samanta  |  Co-Consultant(s):

Awards and Recognition

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Courses Taught

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Patents

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Research Group

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