微波辐射下快速合成棕榈酸异辛酯

Rapid Synthesis of Isooctyl Palmitate under Microwave Irradiation

以棕榈酸、2 -乙基己醇为原料 ,对甲苯磺酸为催化剂 ,运用微波技术成功地合成了棕榈酸异辛酯。其较佳合成条件 :醇酸摩尔比 3∶2 ,辐射时间 40min ,辐射功率 3 0 %、5 60W ,催化剂用量为总量的 0 2 % ,产率可达 98 0 %以上。与常规加热法相比 ,具有反应时间短、节约能源、操作简便、产率高等优点。

Isooctyl palmitate was synthesized by microwave irradiation with palmitic acid,isooctanol as raw material and p-toluenesulfonic acid as catalyst. The yield is 98 0% when the molar ratio of alcohol to acid is 3∶2, reaction time is 40 minutes (30%P,56W), mass percent of catalyst is 0.20% (based on total mass of reactants) and water-carrying reagent is added . By contrast with the conventional heating method,this method is better with short reaction time , convenient operation and high yield.