Tushar Singha
Biography
Tushar Singha completed his graduation in Chemistry (Hons.) from the Krishnath College (University of Kalyani). Then he received his M.Sc degree from IIT Madras in 2020. During his M.Sc he worked with Prof. G. Sekar at IIT Madras. Currently, he is a Doctoral student under the supervision of Dr. Durga Prasad Hari at IISc Bangalore.
Education
2021 – Present PhD, Indian Institute of Science Bangalore
Advisor: Dr. Durga Prasad Hari
2018 – 2020 MSc, Indian Institute of Technology Madras
Advisor: Prof. G. Sekar
2015 – 2018 BSc, Krishnath College, Berhampore
University of Kalyani
Awards & Achievments
Aug 2022 Prime Minister’s Research Fellowship (PMRF) by Ministry of Education
Nov 2020 CSIR (NET) – JRF
June 2019 CSIR (NET) – JRF
Jan 2019 Merit-Cum Means Scholarship by IIT Madras
June 2017 Chief Minister’s Scholarship by Government of West Bengal
Research
Photoredox Catalysis
Photoredox catalysis enables mild, selective, and efficient organic transformations through visible light and a photoredox catalyst. It has become a powerful tool for C-C bond formation, C-H functionalization, and cross-coupling reactions, among others, making it a valuable technique in modern synthetic chemistry.
Ring-Strain Release
The presence of ring strain can greatly enhance the reactivity of chemical reactions by relieving the strain, thereby facilitating the formation of various useful structures. As a result, ring strain serves as a potent driving force in organic synthesis, enabling the construction of numerous valuable scaffolds with ease.
Electro-Synthesis
Electrochemical organic synthesis uses electricity to drive reactions and offers advantages over traditional methods, including improved selectivity, milder reaction conditions, and reduced waste. It has potential for the synthesis of complex molecules, making it a promising tool in modern synthetic chemistry.
Publications
Deconstructive Functionalization of Cyclic Ketones via Electrochemical Interrupted Dowd–Beckwith Reaction
👤 Tushar Singha, Jyothirlatha V. N. Kasu and Durga Prasad Hari
📅 May 19, 2025
Visible-Light-Mediated Strain-Release Radical Spirocyclizations: Access to Functionalized Spirocyclobutanes
👤 Tushar Singha and Durga Prasad Hari
📄 Synlett 2025, 36, 05, 445-451. (Invited Account)
📅 October 15, 2024
Rhodium(II)-Catalyzed Strain-Enabled Stereoselective Synthesis of Skipped Dienes
👤 Ganesh A. Kadam, Tushar Singha, Sapna Rawat and Durga Prasad Hari
📅 August 01, 2024
Photoredox Catalyzed Strain-Release Driven Synthesis of Functionalized Spirocyclobutyl Oxindoles
👤 Tushar Singha,† Nakul A. Bapat,† Subrat K. Mishra† and Durga Prasad Hari (†equally contributed)
📅 July 24, 2024
Strain-Enabled Radical Spirocyclization Cascades: Rapid Access to Spirocyclobutyl Lactones and – Lactams
👤 Kousik Das, Abhilash Pedada, Tushar Singha and Durga Prasad Hari
📅 December 21, 2023
Photocatalyzed Dowd-Beckwith Radical-Polar Crossover Reaction for the Synthesis of Medium-sized Carbocyclic Compounds
👤 Tushar Singha, Ganesh A. Kadam and Durga Prasad Hari
📅 May 25, 2023
The Dowd-Beckwith Reaction: History, Strategies, and Synthetic Potential
👤 Tushar Singha, Abdur R. S. Mondal, Suparnak Midya and Durga Prasad Hari
📅 May 19, 2025
ℹ️ Radical ring rearrangements (RRR): This Review article discusses the origin and advancement of the Dowd–Beckwith reaction with particular focus on its application to complex natural products synthesis.
Copper-catalyzed domino synthesis of multi-substituted benzo[b]thiophene through radical cyclization using xanthate as a sulfur surrogate
👤 Nallappan Sundaravelu , Tushar Singha , Anuradha Nandy and Govindasamy Sekar
📅 March 23, 2021
