Photocatalyst-free, Visible Light Driven, Gold PromotedSuzuki Synthesis of (Hetero)biaryls

Avisible-light driven Suzuki cross-coupling reactionwas per-formed with colored and bench-stable arylazosulfones in thepresenceofPh3PAuCl (5 mol %) as the catalyst.The absence ofaphotocatalyst ,along with the use of commercially availableand easy-to-handle arylboronic acids underline the novelty andsynthetic usefulness of the protocol. Areaction mechanism in-volvingthe generation of an aryl radicalasthe key intermedi-ate has been proposed on the basis of experimental investigations.