Phosphite-Mediated Photoredox-Catalyzed Activation of N-Hydroxy Sulfonamides for Mild Alkene Hydrosulfonylation.

A novel hydrosulfonylation of alkenes using N-hydroxy sulfonamides as sulfonylating reagents has been achieved via visible light photoredox catalysis, featuring a broad substrate scope and high functional group compatibility. N-Hydroxysulfonamides were developed as a good sulfonyl radical source under visible-light catalysis and demonstrated great application potential in industrial and pharmaceutical synthesis.