A route to α hydropolyfluoroalkanethiols and polyfluorothioacyl halides via thermal split ting of benzyl polyfluoroalkyl sulfides under the action of phosphorus pentoxide was proposed. The thiols obtained were used as starting materials for the synthesis of α hydropoly fluoroalkanesulfenyl chlorides. The properties of the resulting F,S containing compounds were studied.

Mercaptans P 0430Synthesis and Reactivity of Fluorine-Containing Thiols and Thioacyl Halides. -Thermal splitting of polyfluoroalkyl benzyl sulfides like (I) in the presence of P 2 O 5 provides access to the free thiols (II). The latter are used in further transformations to demonstrate their synthetic utility. In contrast, thermal splitting of 1,1-dichloropolyfluoroalkyl benzyl sulfides, e.g. (XII), as well as α,β-unsaturated benzyl sulfides like (XX) affords thioacyl halides [(XIII), (XXI)]. Their reactivity is also studied in several transformations. -(SIZOV*, A. Y.; KOVREGIN, A. N.; SERDYUK, R. N.; VOROB'EV, M. V.; POROSYATNIKOV, V. A.; TSVETKOV, A. A.; KORNEEV, D. O.; ERMOLOV, A. F.; Russ.