摘要
茉莉醛是一种十分重要的合成香料,具有非常重要的应用价值。以苯甲醛和正庚醛为原料,PEG-400为相转移催化剂,氢氧化钾作碱性催化剂,乙醇为溶剂,采用相转移催化的方法制取茉莉醛。通过正交实验确定了最佳反应条件,在PEG-400的用量为4.5g,水醇体积比为2.5∶1,正庚醛的滴加速率为30滴/min,苯甲醛与正庚醛的摩尔比为1.25∶1的条件下,茉莉醛的产率达到86%。
Jasminaldehyde is a very important synthesis spice, and has a very important value. This paper is meant to discuss the preparation of jasminaldehyde through phase transfer catalysis ,with benzaldehyde and heptylaldehyde as raw material, PEG/400 as aphase transfer catalyst, potassium hydroxide as an alkaline catalyst, and ethanol as solvent. The optimal reaction conditions determined by orthogonal experimenting are as follows： the amount of PEG-400 is 4.5 g, the volume ratio of water to alcohol is 2.5 ： 1 ,the adding rate of heptylaldehyde is 30 drops/min, the reactant molar ratio of Benzaldehyde to heptylaldehyde is 1.25 to 1, and the yield of jasminal- dehyde is as high as 86 %.
出处
《唐山学院学报》
2015年第3期65-67,共3页
Journal of Tangshan University
关键词
茉莉醛
相转移催化
工艺研究
Jasminaldehyde
phase transfer catalysis
synthesis
