Oxidation of Cyclohexene to Adipic Acid with Ultrasonic Phase Transfer Catalyst

Adipic acid was synthesized under ultrasonic irradiation using cyclohexene and potassium permanganate.The effect of materials ratio,phase transfer catalyst amount and reaction temperature on the yield of adipic acid was investigated.The optimum reaction conditions were as follows:the temperature was 40℃,cetyltrimethylammonium bromide amount was 2%,the power of ultrasonic was 80W,and the reaction time was 4h.The yield of adipic acid reached 41.1% which was 2.1times higher than that from the ordinary method.