Iron-Catalyzed Fluoromethylene Transfer from a Sulfonium Reagent.

Herein, we report the first example of an iron porphyrin catalyzed fluoromethylene transfer from (2,4-dimethylphenyl)(fluoromethyl)(phenyl)sulfonium tetrafluoroborate to unactivated alkenes. The fluorocarbene or fluoromethylene synthon is the smallest "organic" in a molecular graph of the organofluorine compounds. In this work, we present alternative solution to unavailable fluorodiazomethane (CHFN), a missing one-carbon C1 piece in fluorine chemistry, by using a fluoromethylsulfonium reagent.