Development of a water-mediated and catalyst-free green protocol for easy access to a huge array of diverse and densely functionalized pyrido [2, 3-d: 6, 5-d′] dipyrimidines … G Brahmachari, K Nurjamal, I Karmakar, S Begam, N Nayek, B Mandal ACS Sustainable Chemistry & Engineering 5 (10), 9494-9505, 2017 | 49 | 2017 |
Ultrasound-promoted expedient and green synthesis of diversely functionalized 6-amino-5-((4-hydroxy-2-oxo-2 H-chromen-3-yl)(aryl) methyl) pyrimidine-2, 4 (1 H, 3 H)-diones via … G Brahmachari, M Mandal, I Karmakar, K Nurjamal, B Mandal ACS sustainable chemistry & engineering 7 (6), 6369-6380, 2019 | 47 | 2019 |
Ultrasound-assisted expedient and green synthesis of a new series of diversely functionalized 7-aryl/heteroarylchromeno [4, 3-d] pyrido [1, 2-a] pyrimidin-6 (7 H)-ones via one … G Brahmachari, I Karmakar, K Nurjamal ACS sustainable chemistry & engineering 6 (8), 11018-11028, 2018 | 42 | 2018 |
Visible light-induced and singlet oxygen-mediated photochemical conversion of 4-hydroxy-α-benzopyrones to 2-hydroxy-3-oxo-2, 3-dihydrobenzofuran-2-carboxamides/carboxylates … G Brahmachari, I Karmakar The Journal of Organic Chemistry 85 (14), 8851-8864, 2020 | 38 | 2020 |
Visible Light-Driven and Singlet Oxygen-Mediated Photochemical Cross-Dehydrogenative C3–H Sulfenylation of 4-Hydroxycoumarins with Thiols Using Rose … G Brahmachari, A Bhowmick, I Karmakar The Journal of Organic Chemistry 86 (14), 9658-9669, 2021 | 35 | 2021 |
Catalyst-and solvent-free C sp2–H functionalization of 4-hydroxycoumarins via C-3 dehydrogenative aza-coupling under ball-milling G Brahmachari, I Karmakar, P Karmakar Green Chemistry 23 (13), 4762-4770, 2021 | 26 | 2021 |
Series of Functionalized 5-(2-Arylimidazo[1,2-a]pyridin-3-yl)pyrimidine-2,4(1H,3H)-diones: A Water-Mediated Three-Component Catalyst-Free Protocol Revisited G Brahmachari, N Nayek, I Karmakar, K Nurjamal, SK Chandra, ... The Journal of Organic Chemistry 85 (13), 8405-8414, 2020 | 19 | 2020 |
Triethylamine—a versatile organocatalyst in organic transformations: a decade update G Brahmachari, N Nayek, K Nurjamal, I Karmakar, S Begam Synthesis 50 (21), 4145-4164, 2018 | 17 | 2018 |
Structural confirmation of biorelevant molecule N-iso-butyl, S-2-nitro-1-phenylethyl dithiocarbamate in gas phase and effect of fluorination T Yadav, G Brahmachari, I Karmakar, P Yadav, A Agarwal, V Mukherjee, ... Chemical Physics Letters 762, 138124, 2021 | 16 | 2021 |
Photochemical and electrochemical regioselective cross-dehydrogenative C(sp2)-H sulfenylation and selenylation of substituted benzo [a] phenazin-5-ols N Nayek, P Karmakar, M Mandal, I Karmakar, G Brahmachari New Journal of Chemistry 46 (28), 13483-13497, 2022 | 15 | 2022 |
Electrochemical and mechanochemical synthesis of dihydrofuro [3, 2-c] chromenones via intramolecular C sp3–H cross-dehydrogenative oxygenation within warfarin frameworks: an … I Karmakar, G Brahmachari Green Chemistry 24 (7), 2825-2838, 2022 | 15 | 2022 |
Alum (KAl (SO4) 2.12 H2O)-an eco-friendly and versatile acid-catalyst in organic transformations: a recent update G Brahmachari, K Nurjamal, S Begam, M Mandal, N Nayek, I Karmakar, ... Current Green Chemistry 6 (1), 12-31, 2019 | 11 | 2019 |
Camphor-10-sulfonic acid (CSA): a water compatible organocatalyst in organic transformations G Brahmachari, K Nurjamal, I Karmakar, M Mandal Current Organocatalysis 5 (3), 165-181, 2018 | 11 | 2018 |
Electrochemical Regioselective C(sp2)–H Selenylation and Sulfenylation of Substituted 2-Amino-1,4-naphthoquinones P Karmakar, I Karmakar, D Pal, S Das, G Brahmachari The Journal of Organic Chemistry 88 (2), 1049-1060, 2023 | 10 | 2023 |
Synthesis, structural and vibrational spectroscopic investigation of molecules: Nn-butyl, S-2-nitro-1-phenylethyl dithiocarbamate and Nn-butyl, S-2-nitro-1-(4-flurophenyl … T Yadav, G Brahmachari, I Karmakar, P Yadav, A Agarwal, V Mukherjee, ... Vibrational Spectroscopy 111, 103151, 2020 | 10 | 2020 |
Diversely Functionalized N‐Alkyl/Substituted alkyl, S‐2‐nitro‐1‐arylethyl Dithiocarbamates: Green Synthesis, Large Scale Application, and Insights in Reaction … G Brahmachari, I Karmakar ChemistrySelect 4 (2), 747-751, 2019 | 10 | 2019 |
Visible‐Light‐Driven and Singlet Oxygen‐Mediated Synthesis of Biologically Relevant 2‐Hydroxyphenylated‐α‐Ketoamides Through Decarboxylative Amidation of 4‐Hydroxycoumarins G Brahmachari, I Karmakar Asian Journal of Organic Chemistry 11 (3), e202100800, 2022 | 9* | 2022 |
Facile and straightforward synthesis of racemic version of substituted 3-[3-(2-hydroxyphenyl)-3-oxo-1-arylpropyl]-4-hydroxycoumarins: easy access to a series of biorelevant … G Brahmachari, M Mandal, I Karmakar Synthesis 54 (02), 451-464, 2022 | 8 | 2022 |
Conformational and vibrational spectroscopic investigation of Nn‑butyl, S-2-nitro-1-(p-tolyl) ethyl dithiocarbamate–a bio-relevant sulfur molecule T Yadav, G Brahmachari, I Karmakar, P Yadav, AK Prasad, A Pathak, ... Journal of Molecular Structure 1238, 130450, 2021 | 7 | 2021 |
Ultrasound-Promoted Organic Synthesis – A Recent Update IK Goutam Brahmachari, Nayana Nayek, Mullicka Mandal, Anindita Bhowmick Current Organic Chemistry, 2021 | 7 | 2021 |