Nucleophilic perfluoroalkylation of diaryldisulfides with perfluorocarboxylate salts

A new industrial and economical route to trifluoromethyl aryl sufides by thermal decarboxylation of trifluoroacetate salts has been recently developed. The possibility of generalising this reaction of “trifluorodecarboxylation” to RfCO2K (Rf: CCl3, CF2Cl, CF3CF2, CF3CF2CF2) in order to synthesise RfSAr has been studied. Thus, the reaction was effective with RfCO2K (Rf=CCl3, CF3CF2) and a new route to aryl pentafluoroethyl sufides CF3CF2SAr has been briefly exemplified.