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Updated: Jun 1, 2025

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Regioselective Access to Substituted Benzothiophenes/furans through Electrochemical Selenium-Promoted Skeletal
Debabrata Maiti1, Atreyee Halder1, Aritri Saha1
1Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
Abstract:
An electrochemical strategy for the regioselective construction of seleno-benzothiophenes/furans is reported through electrochemical selenocyclization, followed by Wagner-Meerwein rearrangement. This electro-oxidative tandem process operates under metal-free and external chemical oxidant-free conditions. Advantageously, unprotected homopropargyl alcohols were found to be compatible under the reaction conditions, releasing water and dihydrogen as the biproduct. This methodology reveals good functional group tolerance, allowing a broad spectrum of substrate scopes of up to 87% isolated yield.
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