| 摘要 |
A catalyst composition obtainable by reacting together (a) a source of a Group VIII metal; (b) a bidentate phosphine ligand of formula (I) where x is 0 or 1, y is 0 or 1 and the R<1> groups are independently selected from a phenyl group or an alkyl substituted phenyl group with the proviso that at least one of the R<1> groups is an alkyl substituted phenyl group; and (c) a promoter is disclosed. The Group VIII metal is preferably palladium. The promoter can be a weakly or non-coordinating anion. Alternatively, the promoter can be a boron hydrocarbyl compound or an aluminoxane. The catalysts are used in the preparation of polyketones. |
