Dehydrogenative Fluorination of gem‐Difluoroalkenes to Access Multi‐Substituted Trifluoromethylalkenes

A dehydrogenative fluorination method is developed to access multi-substituted trifluoromethylalkenes starting from a variety of gem-difluoroalkenes. The reaction proceeds with electrophilic fluorination source NFSI only and accommodates a wide range of functional groups, thus complementing the previously reported protocols. Additionally, a visible-light-promoted stereoinversion is revealed to enable the access to E-isomer enriched products.