| 摘要 |
1394134 Nickel complexes containing phosphorus ligands; adiponitrile E I DU PONT DE NEMOURS & CO 2 Aug 1972 [2 Aug 1971] 36120/72 Headings C2P and C2C Novel N-bonded nitrile complexes of zerovalent nickel of formula Ni(PXYZ) 3 R<SP>1</SP>CN where X is OR, Y and Z are R or OR and R is optionally substituted C 1-18 alkyl or aryl, the radicals R of a given PXYZ ligand optionally being cojoined, and being the same or different, the radicals R being chosen so that the ligand PXYZ has a cone angle having an average value between 130 and 200 degrees, and where R<SP>1</SP>CN is an organo nitrile, may be prepared by reacting a complex Ni(PXYZ) 3 or another suitable complex with R<SP>1</SP>CN. R<SP>1</SP> is preferably alkyl cyanoalkyl, aryl, fluoroaryl or C 3-20 alkenyl wherein the double bond is separated from CN by at least one carbon atom. The complexes may be used as catalysts in a process for the hydrocyanation of olefinic compounds, e.g. the hydrogenation of 3-pentenonitrile or 4-pentenonitrile to adiponitrile. |
