新型香料草莓酯的合成

Synthesis of a New Type Perfume Fraistone

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００４％（以反应体系的质量为基准）、反应时间为６５ｈ、反应温度为８５～８７℃时，产物收率达８５１５％。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.