Observations on the α-fluorination of α-phenylsulfanyl esters using difluoroiodotoluene

α-Phenylsulfanyl esters are fluorinated in the α-position when treated with the hypervalent iodine reagent difluoroiodotoluene. Excess reagent can lead to α-fluoro sulfoxides, which can then undergo thermal syn elimination to produce vinyl fluorides.