Process for the isomerization of methyl-2 butene-3 nitrile

Details Process for the isomerization of methyl-2 butene-3 nitrile Process for the isomerization of methyl-2 butene-3 nitrile

C - Chemistry, Metallurgy

07

C

C07C 255/07 (2006.01) C07C 253/10 (2006.01) C07C 253/30 (2006.01)

Patent

CA 2117725

This invention concerns a process for isomerizing 2-methyl 3-butyl nitrile into linear pentene- nitrile, specifically into 3-pentene nitrile, which is an intermediate compound used in the preparation of adiponitrile. More precisely, the invention consists of a simple and practical process for isomerizing 2-methyl 3-butylene-nitrile into linear pentene-nitrile, characterized by the fact that the reaction occurs in the presence of an aqueous solution consisting of at least one sulphonated phosphine and at least one transition metal compound.

La présente invention a trait à un procédé d'isomérisation du méthyl-2 butène-3 nitrile en pentène-nitrile linéaire, en particulier en pentène-3 nitrile qui est un composé intermédiaire pour la préparation de l'adiponitrile. Plus précisément, l'invention consiste en un procédé simple et pratique d'isomérisation du méthyl-2 butène-3 nitrile en un pentène-nitrile linéaire, caractérisé en ce que la réaction est effectuée en présence d'une solution aqueuse d'au moins une phosphine sulfonée et d'au moins un composé d'un métal de transition.

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