Fe‐Catalyzed Electrochemical C−O Bond Cleavage of Ethers to Access Benzazoles from Ethers and o‐Substituted Anilines

Abstract

An efficient Fe-catalyzed electrochemical synthesis of benzothiazoles from ethers with 2-aminobenzenethiols has been developed through selective CÀ O bond cleavage of ethers under oxidant-free conditions. A set of ethers have been converted to the corresponding 2-aryl-, 2-heteroaryl-, and 2-alkyl-substituted benzothiazoles in moderate to good yields. The method has also been successfully applied to generation of benzimidazoles and benzoxazoles with satisfactory yields and good functional group compatibility.

Introducing the use of a recyclable solid electrolyte for waste minimization in electrosynthesis: preparation of 2-aryl-benzoxazoles under flow conditions

“…To quantify the benefits and the advances in terms of the sustainability of our procedure, we compared some green metrics ( E -factor, RME and MRP) calculated for our and other electrochemical procedures. 28…”