2,2-dihalovinyl haloformates and process of preparation

Abstract

Novel 2,2-dihalovinyl haloformates are described of general formula: ##STR1## in which: X is a chlorine or bromine atom; X.sub.1 and X.sub.2 are the same or different and are chlorine or bromine. The compounds are prepared by reaction of a 1,2,2,2-tetrahaloethyl haloformate of formula: ##STR2## in which: X.sub.1, X.sub.2 and X are as described hereinabove; X.sub.3 is chlorine or bromine and is always bromine when X.sub.1 and/or X.sub.2 is bromine and X.sub.4 is chlorine or bromine, with a metal such as zinc or magnesium in a solvent. The novel compounds are very useful for the preparation of 2,2-dihalovinyl carbonates and carbamates which may be used as insecticides or as comonomers.

Dependencies are inferred from the claim text.