Highly Diastereoselective Synthesis of Dihydro‐benzoimidazo‐[1,3]‐thiazines via Electro‐oxidative Selenocyclization of Thioallyl Benzoimidazoles
- 5 October 2021
- journal article
- research article
- Published by Wiley in Chemistry – An Asian Journal
- Vol. 16 (23), 3895-3899
- https://doi.org/10.1002/asia.202101033
Abstract
The current methodology reveals a green and proficient electro-oxidative tandem selenocyclization of thioallyl benzoimidazoles manufacturing selenylated dihydro-benzoimidazo-thiazine derivatives. Both C−Se and C−N bond formation were achieved via this mild protocol which exhibits good functional group tolerability affording an extensive range of substrate scope up to 96% isolated yields. Complete control over the regioselective formation of the six-membered heterocycle and stereoselective construction of the contiguous stereocenters was established. The practical electrochemical method operates in an undivided cell at ambient temperature without using any metal and external chemical oxidant.Keywords
Funding Information
- Indian Institute of Science Education and Research Kolkata
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