微波密封罐催化合成对羟基苯甲酸异丁酯

Synthesis of Isobutyl p-Hydroxybenzoate with Catalysis and Microwave in Sealed Jar

在密封罐内,利用微波辐射技术,以一水合硫酸氢钠为催化剂,由对羟基苯甲酸和异丁醇快速合成了对羟基苯甲酸异丁酯。最佳反应条件为:醇酸物质的量比为3¨1,催化剂用量0.8g,辐射时间10m in,微波辐射功率522W。在此反应条件下,产品收率基本稳定在96%以上。

In sealed Jar,the isobutyl p-hydroxybenzoate was synthesized lastly with the technique of microwave radiation and sodium bisulfate monohydrate as catalyst. Actors in fluencing yield were discussed. The optimum reaction conditions were as follow ： molar ratio of alcohol and acid was 3 ： 1, the amount of catalyst was 0.8g, the power of microwave was 522W, the radiating time of microwave was 10min.