Hydrogermylation of Alkenes via Organophotoredox-Initiated HAT Catalysis.

This Letter discloses the straightforward hydrogermylation of olefins under visible-light organophotoredox-initiated HAT catalysis conditions to yield primary and secondary alkyl germanes at room temperature. The protocol is operationally simple, metal-free, and tolerant of various functional groups. The synthesized alkyl germanes proved to be highly robust toward acidic, basic, or oxidizing conditions and chemical transformations of C sp 2 -GeEt 3 or C sp 2 -BPin functionalities in their presence.