Method for producing cyanovaleric acid or esters thereof

Details Method for producing cyanovaleric acid or esters thereof Method for producing cyanovaleric acid or esters thereof

C - Chemistry, Metallurgy

07

C

C07C 253/00 (2006.01) C07C 253/30 (2006.01) C07F 15/00 (2006.01) C07C 255/19 (2006.01)

Patent

CA 2342170

The invention relates to a method for producing cyanovaleric acid or esters thereof by reacting 2-, 3- or 4-pentene nitrile or mixtures thereof with carbon monoxide and with a compound containing hydroxyl groups in the presence of a catalyst system. Said catalyst system comprises: (i) a palladium (II) compound, (ii) a bidentate diphosphine ligand and (iii) an anion source. The invention also relates to novel catalyst systems with diphosphine ligands of the bis(phosphinomethyl)amine type.

L'invention concerne un procédé permettant de préparer de l'acidecyanovalérianique ou ses esters, par réaction de 2-, 3- ou 4-nitrile de pentène ou leurs mélanges avec du monoxyde de carbone etun composé contenant des groupes hydroxyle, en présence d'un système catalyseur qui comprend: (i) un composé palladium (II), (ii)un ligand de diphosphine à deux dents et (iii) une source d'anions. L'invention concerne en outre de nouveaux systèmes catalyseurs avec des ligands de diphosphine du type bis(phosphinométhyl)amine.

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