| abstract |
The invention relates to a process for the carbonylation of olefins in which process an olefin is reacted with carbon monoxide in the presence of an alcohol or water and of a catalyst system, obtainable by combining: (a) a metal of Group VIII or a compound thereof and (b) a bidentate phosphine, arsine and/or stibine derivative, wherein as bidentate (b) a compound is selected having the general formula wherein M1 and M2 are independently P, As or Sb, R is a divalent organic bridging group with at least 2 carbon atoms in the bridge, and R1-R4 represent the same or different optionally substituted tertiary alkyl groups. The invention further relates to a catalyst system suitable for this process. |