硫酸铁铵催化合成苹果酯-B  

Catalytic synthesis of ethyl acetoacetate 1,2-propylene glycol ketal with ammonium ferric sulfate

作　　者：程银芳[1] 罗双祥[1] 杨水金[1] 

机构地区：[1]湖北师范学院化学与环境工程学院,湖北黄石435002

出　　处：《湖北师范学院学报（自然科学版）》2010年第2期96-99,共4页Journal of Hubei Normal University(Natural Science)

基　　金：湖北省自然科学基金资助项目(2005ABA053)

摘　　要：探讨硫酸铁铵对苹果酯-B合成反应的催化活性,研究乙酰乙酸乙酯与1,2-丙二醇量的比、催化剂用量、带水剂环己烷用量及反应时间等因素对产品收率的影响。实验表明:硫酸铁铵是合成苹果酯-B的优良催化剂,在n(乙酰乙酸乙酯)∶n(1,2-丙二醇)=1∶1.5,催化剂质量为反应物总质量的1.6%,环己烷12mL,反应时间为5h的优化条件下,苹果酯-B的收率可达58.8%.Ethyl acetoacetate 1,2-propylene glycol ketal was synthesized from ethyl acetoacetate and 1,2-propylene glycol by ammonium ferric sulfate.The factors influencing the synthesis were discussed and the optimum conditions were found out.The optimum conditions are： molar ratio of ethyl acetoacetate to 1,2-propylene glycol is 1∶1.5,the quantity of catalyst is equal to 1.6% of feed stocks,dried cyclohexane is 12 mL and the reaction time is 5 h.Ammonium ferric sulfate was an excellent catalyst for synthesizing ethyl acetoacetate 1,2-propylene glycol ketal and its yield can reach over 58.8%.

关 键 词：苹果酯-B 硫酸铁铵 催化 

分 类 号：TQ655[化学工程—精细化工]