electron‐catalyzed, photochemical tandem carbodifluoroalkylation/radical cyclization of enol ethers is disclosed. The reactions occur via addition of difluoroacyl radicals to methylene‐2‐oxazolines and subsequent intramolecular base‐promoted homolytic alkyl substitution (BHAS) of the intermediate oxyl‐alkyl radicals. Initiation of the radical chain reaction is best achieved with a commercially available and cheap
A novel visible light mediated cyclization of enol lactones with difluoroacyl arenes via a free radical tandem difluoroalkylation and C–C coupling of butenolides is presented. This strategy provides a facile approach to potential biological fluorinated γ-butyrolactones with excellent diastereoselectivity.