Hydrogen Peroxide → Azelaic Acid

Participants

Reaction Conditions

Reaction Steps

Into a 500 ml round bottomed flask equipped with a mechanical stirrer, thermometer, dropping funnel, gas influx tube and a condenser, 100 g of crude oleic acid (80% purity) containing 9% linoleic acid and 0.75 g of H2WO4 is added. The stirred mixture is brought to 60°-65° C. and 28 g of 60% w/w H2O2 is added. The H2O2 is gradually added over about 30 mins in order to maintain the temperature between 65°-75° C. Once the addition of H2O2 is completed the mixture is left at that temperature for 1.5 hours. Then, 200 ml of water and 1 g of hydrous cobalt acetate is added to the mixture. The temperature is raised to 70° C. by passing an oxygen stream through the reactor bottom for 4 hours. At the end of the reaction, the reaction products are recovered by the process as described in example 1, obtaining 42.5 g of azelaic acid (yield=70.9%) and 31.3 g of pelargonic acid (yield=70%).

Provenance & Evidence