Reactions of chlorotrifluoromethyldisulphane

Abstract

Chlorotrifluoromethyldisulphane undergoes metathetical reactions with MeSH, EtSH, AcSH, CF₃·C(O)SH,CF₃·SH, AgNCO, and (CF₃)₂C:NLi to from MeS·S·S·S·CF₃, EtS·S·S·CF₃, AcS·S·S·CF₃, CF₃·C(O)S·S·S·CF₃, CF₃S·S·S·CF₃, CF₃·S·S·NCO, and CF₃·S·S·N:C(CF₃)₂, respectively. Free-radical addition to olefins gives products which are formed by attack of Cl· and CF₃SS· on the olefin. With tetrafluoroethylene, hexafluoropropene, hexaflurocyclobutene, chlorotrifluoroethylene, and 1,2-dichloro-1,2-difluoroethylene, CF₃·S·S·CF₂·CF₂Cl, CF₃·S·S· CF(CF₃)·CF₂Cl, CF₃·S·S·CF₂·CFCl·CF₃, CF₃·S·S·[graphic omitted]FCl, CF₃·S·S·CFCl·CF₂Cl, CF₃·S·S·CF₂·CFCl₂, and CF₃·S·S·CFCl·CFCl₂ were prepared. Only tetrafluoroethylene gives a higher telomer, CF₃·S·S·[CF₂·CF₂]₂Cl. Insertion into the sulphur–sulphur bond does not occur.