Synthesis of Benzoselenophenes and Benzothiophenes via Electrochemical Oxidative Seleno(Thio)cyanation/Cyclization Tandem Reaction of Enamides

Abstract An efficient stepwise electrochemical oxidative seleno(thio)cyanation/cyclization tandem reaction of enamides with XCN salts (X=Se and S) was developed herein to access a diverse range of C3‐functionalized benzoselenophenes and benzothiophenes. This protocol can facilitate direct dual C(sp 2 )−H activation, offering versatility and broad substrate compatibility under mild reaction conditions.