Direct Allylic C(sp3)-H Amination of Unactivated Olefins with Sulfonamides by Organocatalysis under Visible Light.

Herein we report the use of photoredox and organic catalysis to accomplish the C(sp3)-H amination of unactivated olefins with sulfonamides, enabling efficient access to allylic amine products with high E-selectivity. The protocol does not require a metal catalyst or prefunctionalization of the coupling partners, and it features mild conditions and functional group tolerance as evidenced by >60 examples. A preliminary mechanistic study uncovered that the transformation involved radical-radical coupling of an allylic radical with a N-centered radical under visible light irradiation.