Visible-Light-Induced Phosphorothioation of Alkenyl Sulfonium Salts with S and -Phosphonates.

An efficient and practical method for synthesizing vinyl phosphorothioates has been demonstrated through a visible-light-induced three-component reaction of alkenyl sulfonium salts, S, and -phosphonates. This method facilitates the synthesis of a diverse range of vinyl phosphorothioates with a wide substrate scope and functional group tolerance. Preliminary mechanistic studies suggest that the reaction involves a phosphorothioate radical-triggered process.