Organocatalytic Enantioselective One‐pot Synthesis of Dihydrocoumarins via C−H Oxidation and Cyclization Cascade

Abstract

Chiral 3,4‐dihydrocoumarin derivatives were obtained from 2‐benzyl phenols and oxazolones in moderate to high yields with excellent enantioselectivitie (up to 96 % ee) through one‐pot cascade via C−H oxidation and cyclization cascade using a binaphthyl‐modified squaramide bifunctional organocatalyst under mild reaction conditions.