Ambient‐Light‐Promoted Perfluoroalkylative Cyclization of β,γ‐Unsaturated Hydrazones: Synthesis of Perfluoroalkylated Pyrazolines

An ambient‐light‐promoted, metal‐free strategy for the direct perfluoroalkylative cyclization of β,γ‐unsaturated hydrazones was developed. The radical process allowed the multifunctionalization of β,γ‐unsaturated hydrazones and selectively yielded perfluoroalkylated pyrazolines in good to excellent yields. The reaction was performed in the presence of a wide range of functional groups under mild reaction conditions and was operationally simple.