Patent ID: 6559332
Filing Date: 2003-05-06
Classification: C07C,C07F,Y02P

Abstract:
A process for preparing a straight-chain acrylonitrile dimer comprising the step of dimerizing an acrylonitrile in the presence of a ruthenium catalyst and in the presence of an additive that is:(a) an aromatic hydroxy compound having a basic aromatic structure and bearing at least one alkyloxycarbonyl substituent and at least one further substituent R on the basic aromatic structure, or (b) a hetaromatic hydroxy compound having a basic heteroaromatic structure and bearing at least one alkyloxycarbonyl substituent and at least one further substituent R on the basic hetaromatic structure; wherein each R is a member selected from the group consisting of a halogen, a cyano group, a amino group, an amido group, a urethane group, a sulphonyl group, a phosphonyl group, a formyl group, a straight-chain C1-C10-alkyl group, a branched C1-C10-alkyl group, a C1-C10-alkoxy group, a C1-C10-alkyloxo group, a C1-C10-alkylsulphinyl group, a C1-C10-alkylamino group, a C1-C10-haloalkyl group, and a C1-C10-alkyloxycarbonyl group; and wherein each hetaromatic hydroxy compound contains a heteroatom selected from the group consisting of nitrogen, sulphur and oxygen.