Aerobic cross-dehydrogenative coupling of terminal alkynes and tertiary amines by a combined catalyst of Zn2+ and OMS-2†
Abstract
In the presence of ZnBr2 and a manganese oxide-based octahedral molecular sieve (OMS-2), cross-dehydrogenative coupling of a wide range of terminal alkynes and tertiary amines to propargylamines efficiently proceeded using molecular oxygen as the terminal oxidant.