Nickel (0)-catalyzed enantio-and diastereoselective synthesis of benzoxasiloles: ligand-controlled switching from inter-to intramolecular aryl-transfer process R Kumar, Y Hoshimoto, H Yabuki, M Ohashi, S Ogoshi Journal of the American Chemical Society 137 (36), 11838-11845, 2015 | 84 | 2015 |
Two-step synthesis of chiral fused tricyclic scaffolds from phenols via desymmetrization on nickel R Kumar, Y Hoshimoto, E Tamai, M Ohashi, S Ogoshi Nature Communications 8 (1), 32, 2017 | 63 | 2017 |
Stereospecific route to 5, 11-methanomorphanthridine alkaloids via intramolecular 1, 3-dipolar cycloaddition of nonstabilized azomethine ylide: Formal total synthesis of … G Pandey, P Banerjee, R Kumar, VG Puranik Organic Letters 7 (17), 3713-3716, 2005 | 62 | 2005 |
Efficient Synthesis of Polycyclic γ‐Lactams by Catalytic Carbonylation of Ene‐Imines via Nickelacycle Intermediates Y Hoshimoto, K Ashida, Y Sasaoka, R Kumar, K Kamikawa, X Verdaguer, ... Angewandte Chemie International Edition 56 (28), 8206-8210, 2017 | 43 | 2017 |
Nickel-catalyzed enantioselective synthesis of cyclobutenes via [2+ 2] cycloaddition of α, β-unsaturated carbonyls with 1, 3-enynes R Kumar, E Tamai, A Ohnishi, A Nishimura, Y Hoshimoto, M Ohashi, ... Synthesis, 2789-2794, 2016 | 38 | 2016 |
Highly Efficient Activation of Organosilanes with η2-Aldehyde Nickel Complexes: Key for Catalytic Syntheses of Aryl-, Vinyl-, and Alkynyl-Benzoxasiloles Y Hoshimoto, H Yabuki, R Kumar, H Suzuki, M Ohashi, S Ogoshi Journal of the American Chemical Society 136 (48), 16752-16755, 2014 | 32 | 2014 |
Strategic Utilization of Multifunctional Carbene for Direct Synthesis of Carboxylic–Phosphinic Mixed Anhydride from CO2 SO Yoichi Hoshimoto,* Takahiro Asada, Sunit Hazra, Takuya Kinoshita ... Angew. Chem. Int. Ed. 55, 16075-16079, 2016 | 30* | 2016 |
Nickel (0)-catalyzed intramolecular reductive coupling of alkenes and aldehydes or ketones with hydrosilanes Y Hayashi, Y Hoshimoto, R Kumar, M Ohashi, S Ogoshi Chemical Communications 52 (37), 6237-6240, 2016 | 30 | 2016 |
Nickel(0)/N-Heterocyclic Carbene-Catalyzed Asymmetric [2 + 2 + 2] Cycloaddition of Two Enones and an Alkyne: Access to Cyclohexenes with Four Contiguous … R Kumar, H Tokura, A Nishimura, T Mori, Y Hoshimoto, M Ohashi, ... Organic letters 17 (24), 6018-6021, 2015 | 29 | 2015 |
Redox-neutral functionalization of α-Csp 3–H bonds of secondary cyclic amines: a highly atom-economical strategy for N-arylation/formal cross-dehydrogenative couplings P Jha, S Husen, R Kumar Green Chemistry 23 (8), 2950-2955, 2021 | 20 | 2021 |
One‐Step Stereospecific Strategy for the Construction of the Core Structure of the 5, 11‐Methanomorphanthridine Alkaloids in Racemic as well as in Optically Pure Form … G Pandey, R Kumar, P Banerjee, VG Puranik European Journal of Organic Chemistry 2011 (24), 4571-4587, 2011 | 19 | 2011 |
Enantioselective Alkylation of Aldehydes Using Functionalized Alkylboron Reagents Catalyzed by a Chiral Titanium Complex R Kumar, H Kawasaki, T Harada Organic letters 15 (16), 4198-4201, 2013 | 18 | 2013 |
Site-selective 1, 3-double functionalization of arenes using para-quinol, C–N, and C–C/C–P three-component coupling S Husen, A Chauhan, R Kumar Green Chemistry 22 (4), 1119-1124, 2020 | 15 | 2020 |
Catalytic Enantioselective Synthesis of α-Substituted Secondary Allylic Alcohols from Terminal Alkynes and Aldehydes via Vinylaluminum Reagents R Kumar, H Kawasaki, T Harada Chemistry - A European Journal 19 (52), 17707–17710, 2013 | 14 | 2013 |
Sustainable Passerini-tetrazole three component reaction (PT-3CR): selective synthesis of oxaborol-tetrazoles A Singh, R Kumar Chemical Communications 57 (76), 9708-9711, 2021 | 10 | 2021 |
Nickel (0)-catalyzed coupling reactions of carbonyls and alkenes with reducing reagents giving six-and seven-membered benzocycloalkanols Y Hayashi, Y Hoshimoto, R Kumar, M Ohashi, S Ogoshi Chemistry Letters 46 (8), 1096-1098, 2017 | 10 | 2017 |
An Overview on Indole Aryl Sulfide/Sulfone (IAS) as Anti‐HIV Non‐Nucleoside Reverse Transcriptase Inhibitors (NNRTIs) AK Sinha, D Equbal, SK Rastogi, S Kumar, R Kumar Asian Journal of Organic Chemistry 11 (4), e202100744, 2022 | 9 | 2022 |
Catalytic Synthesis of Isoquinolines via Intramolecular Migration of N-Aryl Sulfonyl Groups on 1,5-Yne-Imines Y Hoshimoto, C Nishimura, Y Sasaoka, R Kumar, S Ogoshi Bulletin of the Chemical Society of Japan 93 (2), 182-186, 2020 | 7 | 2020 |
Direct Use of Phosphonium Salts for Alkylation of p-Quinols: Formal α-Arylation of Carbonyls via a 5-Membered Betaine-Type Intermediate S Husen, P Jha, A Singh, R Kumar Organic Letters 24 (38), 6925-6929, 2022 | 6 | 2022 |
One-pot C–C, C–N, and C–S bond construction for synthesis of 3-sulfenylindoles directly from unactivated anilines involving dual palladium catalysis and mechanistic insights … SK Rastogi, R Singh, S Kumar, AK Mishra, MB Ahirwar, MM Deshmukh, ... Organic & Biomolecular Chemistry 21 (4), 838-845, 2023 | 5 | 2023 |