Visible-Light-Induced Radical Trifluoromethylation/Cyclization of Alkynes: Synthesis of CF3-Containing Dioxodibenzothiazepines

A simple and metal-free photoinduced radical trifluoromethylation/cyclization reaction of alkynes with readily preparable and air-stable trifluoromethyl thianthrenium triflate (TT-CF3 + OTf -) as the trifluoromethyl source has been developed. This...