Process for the carbonylation of acetylenically unsaturated...

C - Chemistry – Metallurgy – 07 – C

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C07C 69/67 (2006.01) C07C 45/50 (2006.01) C07C 47/21 (2006.01) C07C 51/14 (2006.01) C07C 57/04 (2006.01) C07C 67/38 (2006.01) C07C 69/533 (2006.01)

Patent

CA 2238758

A process for the carbonylation of acetylenically unsaturated compounds by reaction with carbon monoxide and a co-reactant in the presence of a catalyst system based on: (a) a source of platinum; (b) a bidentate ligand of the formula R1R2M1-R-M2R3R4, wherein M I and M2 independently are P As or Sb, R represents a bivalent substituted or non- substituted bridging group containing from 1 to 5 atoms in the bridge, R1 and R2 together are a substituted or non-substituted bivalent group whereby the two free valencies are linked to M I, and R3 and R4 together are a substituted or non-substituted bivalent group whereby the two free valencies are linked to M2 or R3 and R4 independently are substituted or non-substituted hydrocarbyl groups; and (c) a source of anions.

Ce procédé de carbonylation de composés à insaturation éthylénique consiste à faire réagir ceux-ci avec du monoxyde de carbone en même temps qu'avec un autre réactif, et ce en présence d'un système catalyseur comportant: (a) une source de platine, (b) un ligand bidenté de la formule R<1>R<2>M<1>-R-M<2>R<3>R<4>, dans laquelle M<1> et M<2> représentent indépendamment P, As ou Sb, R représente un groupe de pontage bivalent, substitué ou non et contenant 1 à 5 atomes dans le pont, R<1> et R<2> représentent ensemble un groupe bivalent substitué ou non, les deux valences libres étant liées à M<1>, et R<3> et R<4> représentent ensemble un groupe bivalent substitué ou non, les deux valences libres étant liées à M<2>, ou bien R<3> et R<4> représentent indépendamment des groupes hydrocarbyles substitués ou non, et (c) une source d'anions.

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