Process for the preparation of fluorooxy-fluorosulfonyl compounds by direct fluorination of fluoro-beta-sultones.

摘要

Described is the preparation of fluorooxy-fluorosulfonyl compounds by direct fluorination of beta -sultones with elemental fluorine according to the reaction scheme: <CHEM> wherein R1 and R2, the same or different from each other, represent fluorine or chlorine or an alkyl radical partially or completely halogenated with fluorine and/or chlorine. The reaction is conducted continuously in the presence of a fluorination catalyst, preferably an alkali-metal fluoride, at temperatures of from -40 DEG C to +100 DEG C and at pressures of from 50 to 800 kPa.