| abstract |
A process is described for the preparation of aldehydes, in which at least one compound having a vinyl or vinylidene group is reacted with carbon monoxide and hydrogen in the presence of a source of a metal from subgroup VIII and a bidentate dishosphine ligand, the diphosphine ligand generally Formula I has DOLLAR F1, in which DOLLAR AA, together with the phosphorus atom to which it is attached, in each case forms a 2-phosphatricyclo [3.3.1.1 {3,7}] decyl radical, in which one or more non-adjacent carbon atoms may be formed by oxygen atoms are replaced and which is optionally substituted, and DOLLAR AX stands for a bridging chain with 1 to 10 atoms, and the molar ratio of diphosphine ligand to metal is at least 5. The process mainly provides n-aldehydes. |