NHC and visible light-mediated photoredox co-catalyzed 1,4-sulfonylacylation of 1,3-enynes for tetrasubstituted allenyl ketones

Unprecedented NHC and photocatalysis co-catalyzed radical 1,4-sulfonylacylation of 1,3-enynes has been realized, providing structurally diversified tetrasubstituted allenyl ketones via allenyl and ketyl radical cross-coupling.