1. Oxidative cyclization of aryldiynes to 3-acyl-1-indenones, Indian Patent Application No.: 202441004589; Filing Date: 23.01.2024 2024; Inventors: G. Sekar, G. Narasimha Rao and K. Kathirvel.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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.

9.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.

10. 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.