Alcohol Togni-(PhSCF2CF2)-reagent is an electrophilic hypervalent iodine-fluoroalkyl reagent introducing the phenylsulfanyltetrafluoroethyl fragment. A phenylsulfanyltetrafluoroethyl moiety incorporated in the substrate can be treated with tributyltin hydride and generate the corresponding fluoroalkyl radical. If the substrate lacks any olefine, it can be reduced to tetrafluoroethyl group whereas if the substrate contains an olefine in the correct spatial orientation, it can lead to an intramolecular cyclisation affording tetrafluorinated cyclic structures.
