摘要
在五水四氯化锡存在下,肉桂酸和乙醇发生酯化反应合成肉桂酸乙酯。考察了五水四氯化锡用量、酸醇摩尔比和反应时间对肉桂酸乙酯收率的影响。在n(肉桂酸)∶n(乙醇)∶n(五水四氯化锡)=1∶7 5∶0 22、回流反应3h条件下,酯收率达91 4%,并考察了六水三氯化铁、十二水合硫酸铁铵和一水硫酸氢钠催化合成肉桂酸乙酯的催化活性。
Ethyl cinnamate was synthesized by esterification of cinnamic acid with ethanol in the presence of stannic chloride pentahydrate catalyst. The effects of amount of the catalyst, cinnamic acid/ethanol molar ratio and reaction time on the yield of ethyl cinnamate were investigated. Yield of 91.4% was attained under the following condition: cinnamic acid∶ethanol∶stannic chloride =1∶75∶022, reflux, 3 h. The catalytic activity of ferric chloride hexahydrate, ammonium ferric sulfate dodecahydrate and sodium bisulfate monohydrate were also investigated for synthesis of ethyl cinnamate.
出处
《工业催化》
CAS
2003年第10期30-32,共3页
Industrial Catalysis
基金
湖南省教育厅科研基金资助项目(01C022)。
