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Rh-catalyzed allylic C-F bond activation: the stereoselective synthesis of trisubstituted monofluoroalkenes and a mechanism study.

Rhodium-catalyzed allylic C-F bond activation via oxidative addition was found to be a promising approach for the conversion of allylic difluoro-homoallylic alcohols into trisubstituted monofluoroalkenes in good yields with excellent stereoselectivity. The mechanism study shows that C-F bond activation via oxidative addition is involved and PPh3 is responsible for the excellent stereoselectivity.