Patent ID: 6255530
Filing Date: 2001-07-03
Classification: C07B,C07C

Abstract:
A process for preparing a 6-membered ring carbocycle comprising ring hydrogenating an aromatic compound in a reaction system comprising a first phase and a second phase that form two liquid, immiscible phases in which elemental hydrogen is dispersed, the hydrogenation occurring in the presence of from 100 to 2000% of the stoichometrically necessary amount of hydrogen, and the hydrogenation of the aromatic compound being carried out at from 50 to 180.degree. C. and from 1 bar to 400 bar;wherein the first phase is formed by the aromatic compound and the second phase is formed by (i) water, (ii) a hydrogenation catalyst including a hydrogenation-active metal colloidally dispersed therein which comprises a component selected from compounds consisting of groups Ib and VIII of the Periodic Table of the Elements (Mendeleev), and (iii) auxiliaries for stabilizing the colloidal catalyst.