Patent ID: 6392107
Filing Date: 2002-05-21
Classification: B01J,C07C

Abstract:
A process for producing 3,4-dichloro-1-butene comprising the step of isomerizing 1,4-dichloro-2-butene in the presence of a catalyst compound of the formula CpFe(CO)2X, wherein Cp denotes a cyclopentadienyl derivative of the general formula (I), whereinR1 to R5 mutually independently denote H, C1 to C12 alkyl, C5 to C8 cycloalkyl, which may, in turn, bear C1 to C12 alkyl groups, C6 to C14 aryl, alkylaryl, arylalkyl, wherein two adjacent residues may together form saturated or unsaturated C3 to C14 cycles, or denoteâ€”SiR6R7R8, wherein R6 to R7 may mutually independently mean C1 to C4 alkyl, C5 to C8 cycloalkyl or C6 to C14 aryl, and X denotes F, Cl, Br, I.