摘要
在果酸和硫酸铜复合催化剂存在下,以乙酰乙酸乙酯(A)和1,2丙二醇(B)为原料经脱水缩合合成了新型香料草莓酯。正交试验结果表明:在n(A)∶n(B)=1∶1、催化剂质量分数为004%(以反应体系的质量为基准)、反应时间为65h、反应温度为85~87℃时,产物收率达8515%。产物经理化检测和红外光谱确证。
The fraistone was synthesized by the condensation reaction of ethyl acetoacetate (A) with 1,2 propanediol (B) in the presence of a composite catalyst which is composed of levulinic acid and cupric sulfate.The orthogonal experimental results showed that the 85.15% molar yield of fraistone was obtained at a molar ratio of A∶B=1∶1 and the mass fraction of catalyst was 0.04% and at 85~87℃ for 6.5h.The product was characterized by the physical and chemical character and spectra.
出处
《精细化工》
EI
CAS
CSCD
北大核心
1998年第6期21-24,共4页
Fine Chemicals
关键词
草莓酯
合成
香料
fraistone,synthesis,perfume