钨硅杂多酸催化合成桂皮酸正戊酯

Catalytic Synthesis of Amyl Cinnamate by Tungstosillcis Acid

以钨硅杂多酸为催化剂,通过桂皮酸和正戊醇酯化反应合成桂皮酸正戊酯,研究了各有关因素对桂皮酸酯化率的影响.实验证明:钨硅杂多酸是合成桂皮酸正戊酯的良好催化剂,在酸醇物质的量比为1∶2.5,催化剂用量1 g/0.05 mol桂皮酸,带水剂苯7 mL,反应时间为1.5 h条件下,桂皮酸的酯化率可达99.2%.

Amvl cinnamate was synthesized from cinnamic acid and amyl alchol using tungstosilicic acid as catalyst. The results showed that tungstosilicicwas a good catalyst for synthesizing amyl cinnamate. The yield of amyl cinnamate was up to 99.2 % wheb nikar ratui of cinnamic acid to amyl alcohol was 1 ： 2.5, amount of catalyst was 1 g/0.05mol cinnamic acid, water-canrying agent Benzene was 7 mL,and reaction time was 1.5 h.