| 摘要 |
A process for obtaining vinyl compounds by dehalogenation of halofluorinated compounds with aromatic substituents, having formula: <?in-line-formulae description="In-line Formulae" end="lead"?>T-Ar-(O)<SUB>y</SUB>-CFX'-CF<SUB>2</SUB>X'' (I)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein: X'=F, Cl, Br, I; X''=Cl, Br, I; y=0,1; when y=0 X'<>F; T=H, -(O)<SUB>y</SUB>-CFX'-CF<SUB>2</SUB>X'', wherein y, X' and X'' are as above; Ar is a monocyclic, bicyclic or tricyclic bivalent aromatic radical from 6 to 14 carbon atoms, optionally containing heteroatoms, or Ar is formed of two aromatic rings linked by a bivalent radical; said process characterized in that the halofluorinated compounds are dehalogenated in the presence of a transition metal, by operating in a biphasic system of solvents immiscible among each other, formed of a (per)fluorinated solvent and a dipolar aprotic or protic solvent (co-solvent), wherein the ratio moles co-solvent/equivalents of the halofluorinated compound with aromatic substituents ranges from 0.5 to 10.
|
