丁二酮的合成研究  

STUDY ON SYNTHESIS OF BUTANEDIONE

作　　者：欧阳天惠[1] 田红玉[1] 张浩[1] 孙宝国[1] 励建荣 韩晓祥 

机构地区：[1]北京工商大学化学与环境工程学院,北京100048 [2]浙江工商大学食品生物与环境工程学院,浙江杭州310035

出　　处：《北京工商大学学报（自然科学版）》2008年第5期1-4,共4页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：浙江省“食品科学与工程”重中之重学科建设项目开放课题(ZSZKF200714);北京市新世纪百千万人才工程培养经费资助项目

摘　　要：丁二酮具有甜的、奶油、黄油香气,是一种重要的香料化合物,广泛用于各种香精配方中.比较了氯化铁、硫酸铁、氯化铜和硫酸铜4种氧化剂氧化乙偶姻制备丁二酮的效果,其氧化效果的顺序依次是:氯化铁>氯化铜>硫酸铁硫酸铜.氯化铁效果最好,丁二酮产率在85%左右.用双氧水再生氯化铁时,加入浓盐酸最佳用量与氯化亚铁的摩尔比为1∶3.3,再生后的氯化铁氧化效果良好,可多次循环使用.该方法与传统的丁酮亚硝化法相比,具有操作简单、产率高的优点,而且氧化剂可再生循环使用,对环境的污染小.Butanedione has sweet, cream and butter aroma and is an important flavor compound. It has been used in various flavoring formulations widely. Four oxidants, including ironic chloride, ironic sul- fate, cupric chloride and cupric sulfate, were compared to be used to oxidize acetoin to prepare butane- dione. The preferential order of four oxidants in the preparation of butanedione was： ironic chloride〉 cupric chloride〉ironic sulfate=cupric sulfate. Ironic chloride gave the best result and butanedione was obtained in about 85 % yield. The optimum HCl/ferrous chloride molar ratio was 1/3.3 when ironic chloride was generated by using hydrogen peroxide. The generated ironic chloride oxidized acetoin in good yield and could be recycled for many times. Compared with the traditional method of nitrosation of butanone, this method has many advantages, such as simple operation, high yield, and low envi- ronmental pollution due to recycling of oxidant.

关 键 词：丁二酮 乙偶姻 氧化 双氧水 环境友好 

分 类 号：TQ651[化学工程—精细化工] TS264.3[轻工技术与工程—发酵工程]