Process for the preparation of aldehydes from olefins by hydroformylation

A process for the catalytic hydroformylation of olefins having from 3 to 24 carbon atoms, comprising:

• hydroformylating at least one olefin having from 3 to 24 carbon atoms in the presence of a catalyst wherein the catalyst comprises a metal of transition group 8 of the Periodic Table and a ligand represented by formula I:
• 28
• wherein
• X=As, Sb, or P;
• R1a-d, R2a-d=H, an aliphatic or aromatic hydrocarbon radical, or an aliphatic or aromatic alkoxy group, in each case having from 1 to 25 carbon atoms, where R1a-d and R4a-d are identical or different;
• Q1, Q2, Q3, Q4=O, S, NR7, or CR7R8, where R7 and R8 can be identical or different and can have one of the meaning of R1a, with the proviso that either Q3 or Q4 is O, S, or NR7;
• n, m, o, p=0 or 1, with the proviso that either o or p is 1;
• Y=—O—R5, —COOR5, —COOM, —SR5, —NR5R6, —N═CR5R6, —COR5, —CONR5R6, —F, —Cl —Br, or —I,
• where R5 and R6 are identical or different and are H, or an aliphatic or aromatic hydrocarbon radical having from 1 to 25 carbon atoms, and M is H, Li, Na, K or NH4,
• Z1, Z2=a substituted or unsubstituted aliphatic or aromatic hydrocarbon radical having from 1 to 75 carbon atoms, where Z1 and Z2 can be covalently linked.