Syntheses of CF3SF4-Substituted Compounds

Abstract

The new olefins CF3SF4CF=CF2 and CF3SF4CH=CF2 resulted from the dehydrochlorination of CF3SF4CHFCF2C1 and CF3SF4CH2CF2C1, respectively. Tetrafluoro(trifluoromethyl)(trifluorovinyl)sulfur(VI), CF3SF4CF=CF2, when reacted with SO2F2, SF4 or SOF2, S2O6F2, and C1F gave (CF3SF4CFCF3)2SO2, CF3SF4CF[s(O)F]CF3, CF3SF4CF(SO3F)CF2(SO3F), and CF3SF4CFC1CF3, respectively. With highly hindered olefins, such as FS02C(CF3)FCF2OCF2CF=CF2 and CF3SF4CF=CF2, CF3SF4C1 behaved as a chlorofluorinating agent. However, CF3C≡CH with CF3SF4C1 gave equimolar amounts of CF3SF4C-(CF3)==CHC1 and CF3C(C1)=C(SF4CF3)H. The presence of chiral centers in several of the new compounds gave rise to 19F NMR spectra typical of mixtures of diastereoisomers. © 1985, American Chemical Society. All rights reserved.