Preparation of caprolactam

C - Chemistry – Metallurgy – 07 – D

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C07D 201/08 (2006.01) C07D 223/10 (2006.01)

Patent

CA 2268165

The invention concerns the aminomethylation of pentenoic acid derivatives, by reaction with carbon monoxide, hydrogen and ammonia, for preparing caprolactam. More precisely it consists in a method for preparing caprolactam, characterised in that aminomethylation of pentenoic acid derivatives is carried out by reaction with carbon monoxide, hydrogen and ammonia, at a temperature higher than 30 DEG C and in the presence of a catalyst with a base of at least one metal of group VIII of the classification of elements.

La présente invention concerne l'aminomethylation de dérivés des acides penténoïques, par réaction avec le monoxyde de carbone, l'hydrogène et l'ammoniac, afin de préparer le caprolactame . Plus précisément l'invention consiste n un procédé de préparation de caprolactame, caractérisé en ce que l'on réalise l'aminomethylation de dérivés des acides penténoïques , par réaction avec le monoxyde de carbone, l'hydrogène et l'ammoniac, à une température supérieure à 30 ° C et en présence d'un catalyseur à base d'au moins un métal du groupe VIII de la Classification périodique des Eléments.

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