Process for preparing halogenated 1,3-dioxolanes and new products obtained.

摘要

A process for preparing 1,3-dioxolanes of formula: <CHEM> wherein; X1, X2, X3 and X4, like or different from one another, represent F, Cl, Br, I, CF2OSO2F, SO2F, C(O)F, H, perhaloalkyl or oxyperhaloalkyl radicals containing from 1 to 5 carhon atoms, X5 and X6, like or different from each other, represent F or CF3. Said process is characterized in that a bis(fluoroxy)perfluoroalkane is reacted, at a temperature ranging from -140 DEG C to +60 DEG C, with a halogenated olefin. New 1,3-dioxolanes of formula (I) belonging to the class defined hereinbefore.