| 摘要 |
<p>A process for obtaining vinyl compounds by dehalogenation of halofluorinated compounds with aromatic substituents, having formula:
T-Ar-(O)<Sub>y</Sub>-CFX'-CF<Sub>2</Sub> X" (I)
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.</p> |
