17. Metal-free synthesis of cilostazol; Indian Patent Application No. 202441065498; Filing Date :30.08.2024; Inventors: G. Sekar, Gopalakrishnan R.
16. Metal-free synthesis of aripiprazole and its intermediate; Indian Patent Application No. 202441065490; Filing Date: 30.08.2024; Inventors: G. Sekar, Gopalakrishnan R.
15. Copper-catalyzed domino synthesis of thioindirubin via aldol condensation using xanthate as sulfur surrogate; Indian Patent Application No.: 202441030383; Filing Date: 23.10.2024; Inventors: G. Sekar, P. Soundarya.
14. Synthesis of 3-hydroxyisoindoline-1-thione using binaphthyl stabilized bimetallic nanoparticle (Pd/Cu-BNP) as a catalyst by C-H activation; Indian Patent Application No.: 202441030383; Filing Date: 15.04.2024 2024; Inventors: G. Sekar, G. Narasimha Rao and K. Kathirvel.
13. Asymmetric synthesis of enantioenriched trisubstituted 4,5-dihydro-1H -pyrrole-3- carbaldehyde compounds; Indian Patent No. 564108; Application No. 202441067175; Filing date: 05.09.2024; Inventors: G. Sekar, Pandidurai S.
12. Borane catalyzed metal-free synthesis of 3,4-dihydroquinolinones; Indian Patent No. 562604; Indian Patent Application No.: 202441065525; Filing Date: 30.08.2024; Inventors: G. Sekar, Gopalakrishnan R.
11. Synthesis of trisubstituted 1H-pyrrole-3-carbaldehyde compounds; Indian Patent No. 562780; Indian Patent Application No.: 202441067200; Filing Date: 05.09.2024 ; Inventors: G. Sekar, S. Pandidurai and S. Kishor
10. Oxidative cyclization of aryldiynes to 3-acyl-1-indenones;Indian Patent No. 550109; Indian Patent Application No.: 202441004589; Filing Date: 23.01.2024 2024; Inventors: G. Sekar, G. Narasimha Rao and K. Kathirvel.
9. Organocatalytic Enantio- and Diastereoselective Construction of the Pyrrolo[1,2-d][1,4]thiazine-2-Carbaldehyde Core via Consecutive [3+2] Cycloaddition and Rearrangement; Indian Patent No. 454952; Patent Application No: 202241065630, Date of Filing: 28/11/2022, Inventors: Prof. G. Sekar and S. Pandidurai.
8. Enantioselective domino carbopalladation/Csp3-Pd capture using carbenes generated from N-tosyl hydrazones as a safer alternative for diazo compounds to access chiral 3,3-disubstituted oxindoles; Indian Patent No. 463317; Patent Application No: 202241077205, Date of Filing: 30/12/2022, Inventors: Prof. G. Sekar and Vysakh V. Nair.
7. Recoverable andreusable palladium nanoparticle catalyzed stereoselective one-pot synthesis of 3-arylidene-2-oxindoles, Patent Application No: 202241015011, Date of Filing: 18/03/2022, Inventors: Prof. G. Sekar, Dr. Naziya P., Dr. N. Sundaravelu and Mr. Gopalakrishnan.
6. Transition metal-free denitrative C-S cross-coupling of 2-nitrochalcones for the synthesis of thiochromanones, Indian Patent No. 408736; Patent Filing No: 202141062010; Filing Date: 30.12.2021; Inventors: Prof. G. Sekar, and Ms. Anuradha Nandy.
5. Metal-free green synthesis of medicinally valuable multi-substituted 2-phenylimidazo-[1,2-a]pyridines using visible light as sustainable energy source, India Patent No.: 412957; Patent Application No: 202141056856; Filing Date: 07.12.2021; Inventors: Prof. G. Sekar, Dr. Imran Kazi, Dr. Nallappan Sundaravelu and Ms. Anuradha Nandy.
4. Transition-metal-free synthesis of (aryl)(heteroaryl)methanols via halogen bond-assisted C(sp3)-H bond activation, Indian Patent No. 406714, Patent Application No: 202141055975; Filing Date: 02.12.2021; Inventors: Prof. G. Sekar, Dr. Somraj Guha, and Dr. D. Arunprasath.
3. Cu-catalyzed practical domino synthesis of thioaurone and thioindirubin from commercially available starting materials using odorless xanthate as a sulfur surrogate, Indian Patent No.: 402159; Application No. 202141054356; Filing date: 24.11.2021; Inventors: Prof. G. Sekar, and P. Soundarya.
2. Environmentally benign reusable copper nanoparticles-catalyzed synthesis of thiochromanones in water, Indian Patent No.: 415562; Application No. 202141054175; filing date: 24.11.2021; Inventors: Prof. G. Sekar, S. Sangeetha, and P. Soundarya.
1. A one-step synthesis of 2-substituted benzo[b]thiophenes, Indian Patent No.: 384111; Application No: 201941035045 , Filing date: 30.08.2019. International Application No.: PCT/IN2020/050716; Filing date: 17.08.2020; Inventors: Prof. G. Sekar and Dr. E. Poonguzhali.