Preparation of dimethyl cyclohexanedicarboxylates

Details Preparation of dimethyl cyclohexanedicarboxylates Preparation of dimethyl cyclohexanedicarboxylates

C - Chemistry, Metallurgy

07

C

C07C 69/75 (2006.01) C07C 67/303 (2006.01)

Patent

CA 2165206

Disclosed is a process for the preparation of a dimethyl cyclohexanedicarboxylate by the hydrogenation of the analogous dimethyl benzenedicarboxylate ester in the presence of a class of palladium on alumina catalysts which have a unique combination of characteristics. The use of the catalysts permits the process to be carried out at significantly lower process pressures.

On divulgue le mode de préparation d'un cyclohexanedicarboxylate de diméthyle par hydrogénation d'un ester analogue, le benzènedicarboxylate de diméthyle, en présence de catalyseurs de platine sur alumine d'un type possédant une combinaison unique de caractéristiques. L'emploi de ces catalyseurs permet d'effectuer la préparation à des pressions beaucoup plus faibles.

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