Patent ID: 7622616
Filing Date: 2009-11-24
Classification: C07C,C07D

Abstract:
1. A process for obtaining perfluorovinyl compounds by dehalogenation of halofluorinated compounds having a linear, branched or cyclic structure, containing in the molecule at least one group: wherein Y 1 and Y 2 , equal to or different from each other, are selected from Cl, Br, or I; wherein the halofluorinated compounds are dehalogenated to remove chlorine, but not fluorine in the presence of a transition metal or a transition metal couple, by operating in a biphasic system of solvents immiscible among each other, formed of inert (per)fluorinated solvent and an aprotic dipolar or protic solvent (co-solvent), wherein the ratio moles of co-solvent/equivalents of the halofluorinated compound ranges from 0.5 to 10; wherein the halofluorinated compounds are selected from the following classes: A) T B) dioxolanes of formula: