Electrochemical Bromination of Substituted Thiophenes in Batch and Continuous Flow
Hao‐Kuan Lu, Ting Liu, Zhaojiang Shi, Hong Yan, Zhen Li, Ke‐Yin Ye
European Journal of Organic Chemistry1/26/2023·DOI·Read paper
Abstract
<jats:title>Abstract</jats:title><jats:p>An electrochemical bromination of thiophenes from ammonium bromide is developed both in batch and continuous‐flow conditions. Substituted thiophenes possessing 2‐hydrogens selectively afford a series of 2‐bromothiophenes while 2‐substituted benzothiophenes generate 3‐bromobenzo[b]thiophenes. Based on the cyclic voltammetric studies and literature, a bromine cation involved mechanism was proposed.</jats:p>
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