Diastereoselective Visible-Light-Induced Radical Cascade Trifluoromethylation/Sulfuration/Cyclization of 1,6-Enynes with S-Aryl Trifluoromethanesulfonothioates (TTSA)

Under photocatalytic conditions, a novel and highly reactive trifluoromethylating/sulfurating reagent, S-aryl trifluoromethanesulfonothioate (TTSA), was reacted with a variety of 1,6-enynes, affording sulfurizating and trifluoromethylating dihydrofuran-2-one or pyrrolidin-2-one derivates in great...