PURPOSE: To obtain the titled compound useful as an intermediate for various syntheses readily and economically advantageously, by oxidizing 1,4- cyclohexanediol with an O2-containing gas by the use of a specific catalyst.
CONSTITUTION: 1,4-Cyclohexanediol having 3W20wt% concentration is oxidized with an O2-containing gas such as air, etc., in a solvent, preferably a water-soluble solvent in the presence of a catalyst preferably obtained by supporting metallic Pt and a bismuth compound on a carrier such as alumina, active carbon, etc., at room temperature W 100°C at normal pressure W 85kg/cm2 for 2W8hr to give the aimed compound. The catalyst, for example, is prepared by dissolving chloroplatinic acid in water and adsorbing the chloroplatinic acid on the carrier. Then, the catalyst is dried and reduced with a reducing agent such as H2, etc., to give a Pt supported catalyst. Then, a bismuth compound such as bismuth hydroxide, etc., is dissolved in water, the Pt supported catalyst is immersed in the solution and the bismuth compound is adsorbed and dried to give the catalyst.
WADA TETSUO
ONO HIROMOTO
