Welcome to A Hajra Research Group!
Department of Chemistry, Visva-Bharati, India
We are a group of motivated chemists working on developing new methodologies for Synthetic Organic Chemistry. We use early and late transition metals to break away an inactive C-H bond as well as greener pathways like photocatalysis, electrocatalysis, hypervalent halogen chemistry etc to synthesize/functionalize new set of (heteroaromatic) molecules.
Group News
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Aug 27, 2024: Congratulations to Krishna! His work entitled "Non-directed Oxidative Annulation of 2-Arylindazoles with Electron Deficient Olefins via Visible Light Photocatalysis" has been accepted for publication in Chemical Communications. Link
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Aug 22, 2024: Congratulations to Suvam on successfully defending his PhD thesis. Now, he is Dr. Suvam Bhattacharjee. We thank external expert Prof. Umasish Jana, Jadavpur University, for his time.
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June 7, 2024: Two of our works were accepted in Org. Lett. on the same day! Congratulations to Sudip for his accepted work on 'Unusual Regioselective C–H Difluoroalkylation of Heteroarenes under Photoredox Catalysis' and to Biswajit for his accepted work entitled 'Hydro-phosphorothiolation of Styrene and Cyclopropane with S-Hydrogen Phosphorothioates under Ambient Conditions'. Also, thanks to Prof. P. Sarkar for theoretical calculations. Link
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May 16, 2024: In honor of Professor Brindaban C. Ranu's 75th birthday, we dedicate our work, "Metal-Free Synthesis of C-3-Alkoxycarbonylated 2H-Indazoles Using Alkyl Carbazates," to him. This work has just been published in Synlett. Congratulations to Dipti! Link
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Mar 14, 2024: Congratulations to Suvam! His work entitled "Site-Selective Direct Nitration of 2H-Indazoles: Easy Access to 7-Nitroindazoles" has been accepted for publication in Chemical Communications. Link
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Mar 05, 2024: Our article entitled "Silylarylation of Alkenes via meta-Selective C-H Activation of Arenes under Ruthenium/Iron Cooperative Catalysis: Mechanistic Insights from Combined Experimental and Computational Studies" has now been accepted for publication in ACS Catalysis. Congratulations to Sukanya and the team! Link
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Jan 30, 2024: Congratulations to Dipti, Suvam and the team on their Chem. Commun. article on "Iodine(III)-Promoted Oxidative Carbotrifluoromethylation of Maleimides with Imidazopyridines and Langlois’ Reagent". Link
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Jan 26, 2024: Our Group page is now Live!
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Jan 4, 2024: Congratulations to Payel on successfully defending her PhD thesis. Now she is Dr. Payel Ghosh. We thank external expert Prof. Subhas Chandra Pan, IIT Guwahati for his time.