| 摘要 |
The invention pertains to a process for the hydroformylation of an ethylenically unsaturated compound in the presence of an acid with a pKa < ; +3, and a catalyst of a group VIII metal and a bidentate ligand of the formula: R1R2-P-X-P-R3R4 (I) wherein P is a phosphorus atom, X represents a bivalent organic bridging group, R1, R2, R3 and R4 represent independently a substituted or unsubstituted hydrocarbyl group, or R1 and R2 together with t he phosphorus atom to which they are bonded and/or R3 and R4 together with the phosphorus atom to which they are bonded represent a bivalent substituted or unsubstituted cyclic group, characterized in that the process is performed i n the presence of a mono tert-phosphine, wherein the ratio moles of mono tert- phosphine : moles of acid is from 1 : 1 to 10 : 1. |
