第 35 卷第 2 期 Vol. 35 No. 2 2005 年 4 月 Apr 2005

所属栏目：其它 乙酰乙酸乙酯环乙二缩酮的催化合成研究

张富捐; 盛淑玲; 张翔宇(许昌学院化学系; 河南许昌)

摘　要：以硫酸铈铵为催化剂,通过乙酰乙酸乙酯与乙二醇反应合成了乙酰乙酸乙酯环乙二缩酮,研究了催化剂等有关因素对产品收率的影响。实验表明,硫酸铈铵是合成乙酰乙酸乙酯环乙二缩酮的良好催化剂,在酯醇物质的量比为1∶1.4(mol),催化剂用量为0.5g/0.1mol乙酰乙酸乙酯,环己烷10ml,反应时间3h的条件下,收率可达80.1%。

关键词：硫酸铈铵; 催化合成; 乙酰乙酸乙酯环乙二缩酮

中图分类号：TQ655　　文献标识码：A　　文章编号：1009-9212(2005)02-0057-02

Study on Catalysis Synthesis of Acetoacetic Ester Cyclic Ethylene Ketal

ZHANG Fu-juan; SHENG Shu-ling; ZHANG Xiang-yu（Department of Chemistry; Xuchang University; Xuchang 461000; China）

Abstract：Acetoacetic ester cyclic ethylene ketal was synthesized from ethyl acetoacetate and ethanediol using ammonium ceric sulfate as catalyst .The factors influencing the synthesis were discussed and best conditions were found out .The optimum conditions are as follows: the molar ratio of ethyl acetoacetate to alcohol was 1.0∶1.4,the amount of catalyst was 0.5g/0.1mol ethyl acetoacetate,the reaction time was 3h. Ammonium ceric sulfate was a good catalyst for synthesizing acetoacetic ester cyclic ethylene ketal,th...

Key words：ammonium ceric sulfate; catalytic synthesis; acetoacetic ester cyclic ethylene ketal

基金项目：河南省科技厅基金资助项目(0324290010).

收稿日期：2004-10-04

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