La-Catalyzed Decarbonylation of Formamides and Its Applications.

Herein we report the first catalytic decarbonylation and decarbonylative hydroamination of formamides without using additives enabled by a redox-neutral rare earth catalyst. The protocol displays complete N -aryl/alkenyl formamide-selectivity, thus providing a wide variety of creative uses of the N -formylation and N -deformylation method and opening up new prospects for minimizing waste and controlling the required selectivity in amine transformation events.