Sulfenyl chlorides can be converted to sulfinyl chlorides (RS(O)Cl).  In one approach, the sulfinyl chloride is generated in two steps starting with reaction of a thiol () with sulfuryl chloride ().  In some cases the sulfenyl chloride results instead, as happens with 2,2,2-trifluoro-1,1-diphenylethanethiol.  A trifluoroperacetic acid oxidation then provides a general approach to formation of sulfinyl chlorides from sulfenyl chlorides: