Metal and solvent-free oxidation of α-isophorone to ketoisophorone by molecular oxygen

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• 作者：Congmin Wang ; Guoliang Wang ; Jianyong Mao ; Zhen Yao ; Haoran Li
• 刊名：Catalysis Communications
• 出版年：2010
• 出版时间：31 March 2010
• 年：2010
• 卷：11
• 期：8
• 页码：758-762
• 全文大小：320 K

文摘

The metal and solvent-free oxidation of α-isophorone to ketoisophorone (KIP) using N-hydroxy phthalimide (NHPI) as the catalyst under atmospheric oxygen was studied, eliminating the isomerization process of α-isophorone to β-isophorone. The effect of co-catalyst, temperature, time, amount of NHPI, and recycling on the oxidation was investigated. The oxidation of α-isophorone proceed well without any co-catalyst under 60 °C for 10 h, which was different with the traditional oxidation of α-isophorone at high temperature. Furthermore, NHPI can be easily separated and reused with a slight loss on its activity. This aerobic oxidation process by NHPI provides a good alternative way for the industrial synthesis of KIP.