Metal-free direct oxidation of α-isophorone to ketoisophorone by I_2 under photoirradiation  

作　　者：保积庆 陈梨花 唐瑞仁 曹林英 梁珊 

机构地区：[1]School of Biology and Chemical Engineering,Jiaxing University [2]School of Chemistry and Chemical Engineering,Central South University

出　　处：《Journal of Central South University》2012年第10期2755-2759,共5页中南大学学报（英文版）

基　　金：Project(21071152) supported by the National Natural Science Foundation of China

摘　　要：Molecular iodine was first utilized for direct oxidation of a-isophorone （α-IP） to ketoisophorone （KIP） with molecule oxygen at room temperature and the effects of amount of iodine, solvents and reaction time were investigated extensively. The optimized result shows that 70.2% conversion of a-isophorone and 82.6% selectivity of ketoisophorone are obtained with 15% iodine （molar fraction） in acetonitrile under photoirradiation for 5 h. Moreover, the possible mechanism is proposed.Molecular iodine was first utilized for direct oxidation of α-isophorone(α-IP) to ketoisophorone(KIP) with molecule oxygen at room temperature and the effects of amount of iodine,solvents and reaction time were investigated extensively.The optimized result shows that 70.2% conversion of α-isophorone and 82.6% selectivity of ketoisophorone are obtained with 15% iodine(molar fraction) in acetonitrile under photoirradiation for 5 h.Moreover,the possible mechanism is proposed.

关 键 词：ketoisophorone aerobic oxidation IODINE reaction mechanism 

分 类 号：TQ224.2[化学工程—有机化工]