Visible-Light-Catalyzed in Situ Denitrogenative Sulfonylation of Sulfonylhydrazones.

A photocatalyzed in situ denitrogenative sulfonylation of N-arylsulfonyl hydrazones has been developed. This transformation provides a low-carbon strategy to assemble arylalkyl sulfones in a stepwise denitrogenation/sulfonylation manner.