HIGH-EFFICIENCY OF THE GOAGGII SYSTEM IN THE OXIDATION OF CYCLOHEXANE WITH HYDROGEN-PEROXIDE UNDER AN INERT ATMOSPHERE

The oxidation of cyclohexane by the GoAgg(II) system was studied under an inert atmosphere. The concentrations of the catalyst, hydrogen peroxide and cyclohexane were optimized and the products were analyzed during the course of the reaction. It was found that the reaction is very selective, giving 94% cyclohexanone and 6% cyclohexanol. The cyclohexanol is formed in the beginning of the reaction, which after 1 h turns very selective for cyclohexanone. No coupling products with pyridine are formed and the mass balance is better than 99%. The efficiency with respect to hydrogen peroxide is very good, reaching 91% after 10 h of reaction time.