Dd. Desmarteau et al., SYNTHESIS AND CHARACTERIZATION OF 1,2-BIS(CHLOROSULFONYL)TETRAFLUOROETHANE AND 1,2-BIS(FLUOROSULFONYL)TETRAFLUOROETHANE, Journal of fluorine chemistry, 89(1), 1998, pp. 107-109
The new compound ClO2SCF2CF2SO2Cl (1) is prepared by oxidative cleavag
e of the S-S bonds in the cyclic polysulfides <(CF2CF2S3,4)over bar>,
with chlorine and hydrogen peroxide. Compound (1) is converted in high
yield to the bis(fluorosulfonyl) tetrafluoroethane FSO2CF2CF2SO2F (2)
by reaction with KF. This work represents an attractive alternative t
o the previously reported preparation of (2) by electrochemical fluori
nation (ECF). (C) 1998 Elsevier Science S.A. All rights reserved.