A 4-Chloro-5-trifluoromethyl-2, 2, 4-trifluoro-1, 3-dioxolane (1) was synthesised by reaction of CF2 (OF) 2 with CF3 CH CFCl; the elimination of HCl from (1) in basic conditions led to the formation of dioxole perfluoro-4-methyl-1, 3-dioxole (2). Both these synthetic steps gave the corresponding product in high yield. A new synthetic route for the preparation of CF3 CH CFCl, starting from CF2ClBr and CH2 CF2, together with some examples of ...
