A rosin-based surfactant enabling cross-couplings of vinyl dibromides with sulfonamides in water

An efficient method for copper-catalyzed cross-coupling of 1,1-dibromo-1-alkenes with sulfonamides has been achieved by a rosin-based surfactant-enabled micellar catalysis. A variety of ynamides can be prepared in water under micellar conditions. This method features broad substrate scope, good functional group tolerance, great recyclability, and green solvent.