Ph. D./JRF/RA/Postdoc positions are available; interested candidates may contact through email: chowhan@jnu.ac.in

Publications

74. Visible-light-induced Organocatalytic Photochemical One-pot Construction of Functionalized Pyridine Scaffolds, RT Starthring, Chavda Snehal Kumar, Biplob Borah, Madavi S. Prasad, L. Raju Chowhan, 2025, Manuscript communicated.

73. An Efficient Organo-Catalyzed Umpolung Addition Process for The Synthesis of 3,3-Disubstituted Oxindoles, Shashank Rai, L. Raju Chowhan, 2026, Indian Patent, IN202611113049.

72. A PHOTOACID-CATALYZED ONE-POT PROCESS FOR THE SYNTHESIS OF FUNCTIONALIZED PYRAZOLO[3,4-b]PYRIDINE AND PYRIDO[2,3-d]PYRIMIDINE DERIVATIVES, Biplob Borah, L. Raju Chowhan, 2026, Indian Patent, IN202611116285.

71. Stereoselective synthesis of 3,3ʹ-spirooxindoles with higher order heterocycles, RT Starthring, B Borah*, L. Raju Chowhan*, Org. Biomol. Chem., 2025, 23, 8829-8840.

70. Design, Synthesis, Crystal Structure Analysis, Hirshfeld Surface Scrutiny, and DFT-Calculations of Fused 4H-Pyrans and Spirooxindole-Embedded Fused Pyran, NS Veeranagaiah, B Borah, R Pallepogu, L. Raju Chowhan*, Journal of Molecular Structure, 2025, 1347, 143249.

69. Invited Article: Photocatalytic Asymmetric Cross-Dehydrogenative Coupling of Tetrahydroisoquinoline Scaffolds, B. Borah, L. Raju Chowhan*, Tetrahedron Letters, 2025, 155630.

68. Invited Article: Photochemical Multicomponent Synthesis of Six-Membered Heterocycles, B. Borah, P. Mihir, L. Raju Chowhan*, European Journal of Organic Chemistry, 2025, 28, e202401480.

67. Design, Synthesis, Structural Analysis, and DFT Calculation Insights into The Molecular Architecture of Amino Substituted 4H-Chromene Scaffolds, Naveena S. V, B. Borah, Raghavaiah P and L. Raju Chowhan*, Journal of Molecular Structure, 2025, 1321, 140229.

66. Asymmetric synthesis of spiro [benzofuran-pyrrolidine]-indolinedione via bifunctional urea catalyzed [3+ 2]-annulation, S Bharani, BA Rao, LR Chowhan, R Pallepogu, MS Prasad, Organic & Biomolecular Chemistry, 2025, 23, 914-919.

65. Photoredox Catalyzed Cross-Coupling of in situ Generated Quinoxalinones with Indoles for the Synthesis of Tertiary Alcohols, B. Borah, and L. Raju Chowhan*, The Journal of Organic Chemistry, 2024, 89, 14740-14754.

64. Organocatalytic Enantioselective Assembly of Dispiro-bisoxindoles with Vicinal Stereocenters, B. Borah, M. Patat, L. Raju Chowhan*, Org. Biomol. Chem., 2024, 22, 8365-8373.

63. Photochemical Domino Reaction Driven C-H/S-H Functionalization of Bioactive Molecules to Access Xanthene Scaffolds, Biplob Borah, Samrita Sharma, Snehalkumar K Chavada, Sidharth Swain, L. Raju Chowhan*, Org. Biomol. Chem., 2024, 22, 8453-8458.

62. A one-pot ultrasound-assisted regio and stereoselective synthesis of indenoquinoxaline engrafted spiropyrrolidines. R. Bokam, K. Munipalle, S. Ch. V. A, R. Annam, N. Gundoju, L. Raju Chowhan and M. Gowri Ponnapalli, Org. Biomol. Chem., 2024, 22, 5150-5158.

61. Chapter 9 - Recent strategies in the synthesis of spirooxindole scaffolds (stereoselective synthesis), B. Borah, S. Sharma, L Raju Chowhan*, Spirooxindole Chemistry, Synthesis, Characterization and Biological Significance, Elsevier, 2024, https://doi.org/10.1016/B978-0-443-22324-2.00009-6.

60. Remediation of Lead (II) ions from aqueous solution using composites of iron oxide nanoparticles Immobilized on microcrystalline cellulose. Bhupender Kumar, J Nagendra Babu, L. Raju Chowhan*. Applied Research, 2024, 3, e202200107.

59. Enantioselective Synthesis of Octahydrofuranoindole Core of Aspidosperma Alkaloids via a Diels-Alder/Reduction/Fluoroetherification Reaction Sequence. Madavi S. Prasad,* Sankar Bharani, A. K. Jha, S. C. Naik, M. Sivaprakash, and L. Raju Chowhan* Chemistry - An Asian Journal, 2023, 18, e202300419.

58. N-2,2,2-trifluoroethylisatinketimine as a 1,2-dipolarophile for [3+2] addition to access optically pure spirothiazolidine oxindoles. Madavi S. Prasad,* Sankar Bharani, Murugesan Sivaprakash, Prabha Vadivelu, D. Siva Sundara Kumar and L. Raju Chowhan* Org. Biomol. Chem., 2023, 21, 4972-4976.

57. Blossoming of Polyenamine Catalysis in Asymmetric Synthesis: Scope and Future Applications. Biplob Borah, Murugesan Sivaprakash, Samrita Sharma, Madavi S. Prasad,* L. Raju Chowhan*. Chemistry - An Asian Journal, 2023, 17, e202300370.

56. Stereoselective synthesis of CF3-containing spirocyclic-oxindoles by using N-2,2,2-trifluoroethylisatin ketimines: An updates. Biplob Borah, Naveena S V, Samrita Sharma, Mihir Patat, Raghavaiah P, M. S. Prasad and L. Raju Chowhan*. RSC Advances, 2023, 13, 7063-7075.

55. Visible-Light-Mediated Direct Expeditious Photochemical Construction of Spirocyclic-oxindoles. Biplob Borah, Samrita Sharma and L. Raju Chowhan*. Asian Journal of Organic Chemistry, 2023, e202300020.

54. Visible-light-induced Organophotocatalytic and Singlet Oxygen-initiated Domino construction of 1,4-dihydropyridines, quaternary centered C-3 functionalized Spiro[indoline-3,4'-pyridines] and C-11 functionalized Spiro[indeno-[1,2-b]quinoxalines-11,4'-pyridines] in Aqueous Medium. Biplob Borah, Mihir Patat, Vipin Singh, Murugesan Sivaprakash, Madavi S. Prasad, L. Raju Chowhan*. Org. Biomol. Chem., 2023, 21, 1518-1530.

53. Brønsted acid catalyzed domino multicomponent reactions by employing Liquid assisted Grindstone Chemistry. Biplob Borah, Sidhartha Swain, Mihir Patat, Bhupender Kumar, Ketan Kumar Prajapat, Rathindranath Biswas, L. Raju Chowhan*. Scientific Reports, 2023, 13, 1386.

52. Trienamine catalysed unprecedented remote olefin E/Z isomerisation/[4+2]-cycloaddition reaction to access spirooxindole hexahydroindoles, Madavi S. Prasad, Murugesan Sivaprakash, Sankar Bharani and L. Raju Chowhan, Org. Biomol. Chem., 2023, 21, 945-949.

51. DABCO-promoted highly diastereo- and regioselective construction of C-3 functionalized spirooxindoles via [3+2] cycloaddition of 2-aryl/heteroarylidene-1H-indene-1,3(2H)-diones with N-2,2,2-trifluoroethylisatin ketimines at ambient conditions. M. S. Prasad, S. Bharani, S. M. Sharief, M. Ravi, M. Sivaprakash, B. Borah, and L. Raju Chowhan*. RSC Advances, 2022, 12, 34941-34945.

50. Direct Michael Addition/Decarboxylation Reaction Catalyzed by Composite of Copper Ferrite Nanoparticle Immobilized on Microcrystalline Cellulose: An Eco-friendly Approach for Constructing 3,4-Dihydrocoumarin Frameworks. Bhupender Kumar, Biplob Borah, J Nagendra Babu, L. Raju Chowhan*. RSC Advances, 2022, 12, 30704.

49. Recent advances and prospects in the organocatalytic synthesis of quinazolinones. Biplob Borah, Sidhartha Swain, Mihir Patat, L. Raju Chowhan*, Frontiers in Chemistry, 2022, 10, 991026.

48. Invited Article: Recent updates on the stereoselective synthesis of structurally functionalized Spiro-oxindoles mediated by isatin N, N´‑Cyclic azomethine imine 1, 3-Dipoles. Biplob Borah, L. Raju Chowhan*, Tetrahedron Letters, 2022, 104, 154014.

47. Recent advances and prospects in the transition-metal-free synthesis of 1,4-dihydropyridines. Biplob Borah, Mihir Patat, Sidhartha Swain, L. Raju Chowhan*, ChemistrySelect, 2022, 7, e202202484.

46. Sustainable Synthesis of Highly Diastereoselective & Fluorescent Active Spirooxindoles Catalyzed by Copper Oxide Nanoparticle Immobilized on Microcrystalline Cellulose. Bhupender Kumar, J Nagendra Babu, L. Raju Chowhan*. Applied Organometallic Chemistry, 2022, 36, e6742.

45. Ultrasound-assisted transition-metal-free catalysis: A green and sustainable route towards the synthesis of bioactive heterocycles. Biplob Borah, L. Raju Chowhan*. RSC Advances, 2022, 12, 14022-14051.

44. Sonochemistry in organocatalytic domino reaction: An expedient multicomponent access to structurally functionalized dihydropyrano[3,2-b]pyrans, spiro-pyrano[3,2-b]pyrans, and spiro-indenoquinoxaline-pyranopyrans at ambient conditions. Biplob Borah, Jahnu Bora, Pambala Ramesh, L. Raju Chowhan*. RSC Advances, 2022, 12, 12843- 12857.

43. Mechanochemistry in Organocatalysis: A green and sustainable route towards the synthesis of bioactive heterocycles. Biplob Borah, L. Raju Chowhan*. Book title: Green Chemistry - New Perspectives, (ISBN 978-1-80355-778-6), 2022.