Academic Details:
- Scientific Assistant: Department of Chemical Sciences, IISER Berhampur
- Ph.D: Indian Institute of Engineering Science and Technology, Shibpur (IIESTS), Howrah 711103, West Bengal, India., February 2015 – October 2019
Research Area: Synthetic Inorganic and Organic Chemistry. Synthesis of small bioactive molecules using novel strategic approach. Development of new catalytic systems to explore alternative, cheap, environmentally benign way of synthetic organic chemistry. - M.Sc: Indian Institute of Engineering Science and Technology, Shibpur (IIESTS), Howrah 711103, West Bengal, India., 2012 – 2014
Expertise:
- Experimental techniques: complexation, synthesis and purification of organic compounds, crystallization, homogeneous catalysis, reactions under inert conditions, TLC, Column Chromatography, Fractional Crystallization.
- Instrumental Techniques: UV-Visible, IR, NMR, EPR, X-Ray single crystal. Electrochemical Technique: Cyclic Voltammetry.
Publications:
- Sinha, S.; Das, S.; Mondal, R.; Mandal, S.; Paul, N. D. Cobalt Complexes of Redox Noninnocent Azo-aromatic Pincers.Isolation, Characterization and Application as Catalyst for the Synthesis of Quinazolin-4(3H)-ones. Dalton Trans. 2020, 49, 8448-8459.
- Sinha, S.; Sikari, R.; Sinha, V.; Jash, U.; Das, S.; Brandão, P.; Demeshko, S.; Meyer, F.; de Bruin, B.; Paul, N.D. Iron-Catalyzed/Mediated C-N Bond Formation: Competition Between Substrate Amination vs. Ligand Amination. Inorg. Chem. 2019, 58, 1935−1948
- Sinha, S.; Das, S.; Sikari, R.; Parua, S.; Brandão, P.; Demeshko, S.; Meyer, F.; Paul, N. D. Redox Noninnocent Azo-Aromatic Pincers and Their Iron Complexes. Isolation, Characterization, and Catalytic Alcohol Oxidation. Inorg. Chem. 2017, 56, 14084−14100.
- Sikari, R.; Sinha, S.; Jash, U.; Das, S.; Brandão, P.; de Bruin, B.; Paul, N. D. Deprotonation Induced Ligand Oxidation in a NiII Complex of a Redox Noninnocent N1-(2- Aminophenyl)benzene-1,2- diamine and Its Use in Catalytic Alcohol Oxidation. Inorg. Chem. 2016, 55, 6114−6123. (Sikari, R.; Sinha, S contributed equally).
- Mondal, R.; Sinha, S.; Das, S.; Chakraborty, G.; Paul N. D. Iron Catalyzed Sustainable Synthesis of Pyrimidines Under Air. Adv. Synth. Catal. 2019, 361, 1 –8. DOI: 10.1002/adsc.201901172. (Mondal, R.; Sinha, S contributed equally).
- Parua, S.; Das, S.; Sikari, R.; Sinha, S.; Paul, N. D. One pot Cascade Synthesis of Quinazolin-4(3H)-ones via Nickel Catalyzed Dehydrogenative Coupling of o- Aminobenzamides with Alcohols. J. Org. Chem. 2017, 82, 7165−7175. DOI: 10.1021/acs.joc.7b00643.
- Jash, U.; Chakraborty, G.; Sinha, S.; Sikari, R.; Mondal, R.; Paul, N. D. Cu(II)-Complex of 1, 10-Phenanthroline Based Pincer as Efficient Catalyst for Oxidative Cross Dehydrogenative Coupling of Carboxylic Acids with Unactivated Alkanes. A. J. Org. Chem. 2018, 7, 1681- 1688. DOI: 10.1002/ajoc.201800180.
- Parua, S.; Sikari, R.; Sinha, S.; Chakraborty, G.; Mondal, R.; Paul, N. D. Accessing Polysubstituted Quinazolines via Nickel Catalyzed Acceptorless Dehydrogenative Coupling. J. Org. Chem. 2018, 83, 11154-11166. DOI: 10.1021/acs.joc.8b01479.
- Parua, S.; Sikari, R.; Sinha, S.; Das, S.; Chakraborty, G.; Paul, N. D. A Nickel Catalyzed Acceptorless Dehydrogenative Approach to Quinolines. Org. Biomol. Chem. 2018, 16, 274−284. DOI: 10.1039/c7ob02670f.
- Das, S.; Sinha, S.; Jash, U.; Sikari, R.; Saha, A.; Barman, S. K. Brandão, P.; Paul, N. D. Redox-Induced Interconversion and Ligand-Centered Hemilability in NiII Complexes of Redox-Noninnocent Azo-Aromatic Pincers. Inorg. Chem. 2018, 57, 5830−5841. DOI: 10.1021/acs.inorgchem.8b00231.
- Chakraborty, G.; Sikari, R.; Das, S.; Mondal, R.; Sinha, S.; Banerjee, S.; Paul, N. D. Dehydrogenative Synthesis of Quinolines, 2-Aminoquinolines, and Quinazolines Using Singlet Diradical Ni(II)-Catalysts. J. Org. Chem. 2019, 84, 2626−2641. DOI: 10.1021/acs.joc.8b03070.
- Sikari, R.; Sinha, S.; Das, S.; Saha, A.; Chakraborty, G.; Mondal, R.;. Paul, N. D. Achieving Nickel Catalyzed C−S Cross-Coupling under Mild Conditions Using Metal−Ligand Cooperativity. J. Org. Chem. 2019, 84, 4072−4085. DOI: 10.1021/acs.joc.9b00075.
- Das, S.; Sinha, S.; Samanta, D.; Mondal, R.; Chakraborty, G.; Brandao, P.; Paul, N. D. Metal−Ligand Cooperative Approach To Achieve Dehydrogenative Functionalization of Alcohols to Quinolines and Quinazolin-4(3H)-ones under Mild Aerobic Conditions. J. Org. Chem. 2019, 84, 10160-10171. DOI: 10.1021/acs.joc.9b01343.
- Sikari, R.; Sinha, S.; Chakraborty, G.; Das, S.; Petrus van Leest, N.; Paul, N. D. C–N Cross- Coupling Reactions Under Mild Conditions Using Singlet Di-Radical Nickel(II) Complexes as Catalyst: N-Arylation and Quinazoline Synthesis. Adv. Synth. Catal. 2019, 361, 4342- 4353. 10.1002/adsc.201900545.
- Sinha, S.; Muhammed S. E.; Mondal, R.; Das, S.; Manamel, L. T.; Brandão, P.; de Bruin, B.; Das, B. C.; and Paul N. D. A Singlet-Diradical Co(III)-Dimer as a Nonvolatile Resistive Switching Device: Synthesis, Redox-Induced Interconversion, and Current−Voltage Characteristics. J. Am. Chem. Soc. 2022, 144, 20442−20451. DOI: https://doi.org/10.1021/jacs.2c08941.