A catalyst system

B - Operations – Transporting – 01 – J

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B01J 31/24 (2006.01) C07C 51/14 (2006.01)

Patent

CA 2555374

The present invention provides a catalyst system capable of catalysing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining: a) a metal of Group VIB or Group VIIIB or a compound thereof, b) a bidentate phosphine, arsine or stibine ligand, and c) an acid, wherein said ligand is present in at least a 2:1 molar excess compared to said metal or said metal in said metal compound, and that said acid is present in at least a 2:1 molar excess compared to said ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system.

La présente invention concerne un système de catalyseur permettant de catalyser la carbonylation d'un composé présentant une insaturation éthylénique, ce système pouvant être obtenu en combinant a) un métal du groupe VIB ou du groupe VIIIB ou un composé de ce métal, b) un ligand phosphine bidentate, arsine ou stibine, et c) un acide. Le rapport molaire ligand/métal ou ligand/métal dans ledit composé en termes d'excédent molaire est d'au moins 2:1 et le rapport molaire acide/ligand en termes d'excédent molaire est d'au moins 2:1. L'invention concerne également un procédé de carbonylation d'un composé présentant une insaturation éthylénique, un milieu de réaction et l'utilisation de ce système.

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