Exogenous Photocatalyst-Free Aryl Radical Generation from Diaryliodonium Salts and use in Metal-Catalyzed C–H Arylation

Herein, we demonstrate 1) that Lewis base heteroatom coordination to diaryliodonium salts is not required for light-driven radical generation and 2) radicals generated by this route can be captured by transition-metals for coupling reactions. These results are the first step toward developing new aryl radical coupling reactions without exogenous photocatalysts.