A copper-catalyzed multi-component reaction accessing fused imidazo-heterocycles via C–H functionalization

Abstract

An efficient synthesis of fused imidazo-heterocycles is described using Cu(OTf)₂in [bmim]BF₄by the multi-component reaction of pyridin-2(1<italic>H</italic>)-one or thiazol/benzo[<italic>d</italic>]thiazol-2(3<italic>H</italic>)-ones with<italic>O</italic>-tosylhydroxyl amine and acetophenones under microwave irradiation.