Regioselective Reaction of Oxiranes with <i>S</i>-Phenyl Thioesters Catalyzed by Quaternary Onium Salts or Crown Ether–Metal Salt Complexes

Abstract

Abstract Regioselective addition reactions of 2-substituted oxiranes with S-phenyl thioesters gave 2-aceyloxy-1-phenylthio derivatives in high yield using some 18-crown-6–metal complexes as well as tetrabutylammonium salts as a catalyst under relatively mild conditions.