对乙基苯甲酸制备的新方法  

The New Method of Preparation of the p-ethylbenzoic Acid

作　　者：汪建红[1] 王碧[1] 朱宇萍[1] 

机构地区：[1]内江师范学院化学与生命科学学院,四川内江641112

出　　处：《内江师范学院学报》2008年第8期110-112,共3页Journal of Neijiang Normal University

摘　　要：以乙酸酐、乙基苯和无水三氯化铝为原料合成对乙基苯乙酮,并利用碘仿反应氧化对乙基苯乙酮制备对乙基苯甲酸.考察了制备对乙基苯乙酮时催化剂用量、反应温度、反应时间对对乙基苯乙酮收率的影响和碘仿反应的反应温度、反应时间对产物对乙基苯甲酸的收率的影响.结果表明:制备对乙基苯乙酮的过程中,催化剂用量2.0∶1.0,反应温度70℃,反应时间5h,为最为合适的反应条件;制备对乙基苯甲酸的过程中,反应温度70℃,反应时间4h,为最为合适的反应条件.The p-ethylacetophenone was synthesized with acetylated, ethylbenzene and anhydrous aluminium chloride, then was oxidized to p-ethylbenzoic acid with iodoform reaction. The influence of the reaction conditions, such as the catalyst amount, the reaction temperature and the reaction time, upon the yield of the p-ethylacetophenone were investigated, as well as the influence of the reaction temperature, the reaction time of iodoform reaction, upon the yield of the p-elhylbenzoicacid, The result showed that, the most suitable reaction condition was got when the catalystdose ratio was 2.0 ： 1, 0, the reaction temperature was 70℃, and the reaction time was 5h in the preparation of the p-ethylacetophenone. The most suitable reaction condition was got when the reaction temperature was 70℃, the reaction time was 4h in the preparation of the p-ethylbenzoic acid.

关 键 词：对乙基苯乙酮 催化剂 碘仿反应 对乙基苯甲酸 

分 类 号：O622.5[理学—有机化学]