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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. If the substrate contains an olefine in the correct spatial orientation, this can lead to an intramolecular cyclisation affording tetrafluorinated cyclic structures.
Subject to International Patent Application #WO2016019475A1 of the ETH Zurich and Institute Of Organic Chemistry And Biochemistry Academy Of Sciences Of The Czech Republic.