Allylic C(sp)-H alkylation synergistic organo- and photoredox catalyzed radical addition to imines.

A new catalytic method for the direct alkylation of allylic C(sp)-H bonds from unactivated alkenes synergistic organo- and photoredox catalysis is described. The transformation achieves an efficient, redox-neutral synthesis of homoallylamines with broad functional group tolerance, under very mild reaction conditions. Mechanistic investigations indicate that the reaction proceeds through the -centered radical intermediate which is generated by the allylic radical addition to the imine.