2,2-dihalovinyl haloformates, process of preparation and...

Details 2,2-dihalovinyl haloformates, process of preparation and... 2,2-dihalovinyl haloformates, process of preparation and...

C - Chemistry, Metallurgy

07

C

260/467, 260/468

C07C 69/96 (2006.01) C07C 269/04 (2006.01) C07C 271/28 (2006.01)

Patent

CA 1291154

NOVEL 2,2-DIHALOVINYL HALOFORMATES, PROCESS OF PREPARATION AND APPLICA- TIONS THEREOF ABSTRACT OF THE DISCLOSURE Novel 2,2-dihalovinyl haloformates are described of general formula: Image in which: X is a chlorine or bromine: atom; X1 and X2 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: Image . in which: X1, X2 and X are as described hereinabove; X3 is chlorine or bromine and is always bromine when X1 and/or X2 is bromine and X4 is chlorine or bromine with a metal such as zinc of 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.

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