Reactions of hexafluoropropene trimers with thiols

Abstract

The HFP trimers (I) and (II) were shown to react readily with thiols in the presence of Et3N. Trimer (I) produces vinylic fluorine atom substitution products (IIIa-e) (yields 78-82%). The reaction of trimer (II) with thiols gives corresponding alkyl(aryl)-perfluoropentadienylsulfides (IVa-e) in good yields. The scheme explaining the formation of products (IVa-e) is proposed. ▪The first representative of perfluoroalkylsubstituted thietes - perfluoro-2,4,4-trimethyl-3-isoprophyl-2-thiete (V) is obtained by decomposition of product (IVd). ▪Thiete (V) preparation by a convenient one-part procedure directly from HFPT is also described.