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以对甲苯磺酸为催化剂合成中间体 (Z) -丁烯二酸二 [2 -(2 -乙基 )己氧基 ]乙酯 ,考察并优化了酯化反应条件 ,完善了新型阴离子表面活性剂丁二酸二 [2 -(2 -乙基 )己氧基 ]乙酯磺酸钠的合成条件 .确定了酯化反应最佳条件为 :醇酐摩尔比为 4∶1 ,催化剂用量约占反应物总质量的 0 8% ,以 1 2 0mL苯为带水剂 ,在回流状态下反应 6h .最终酯化率可达 95 8% .
The synthesis of bis (2 - (2 - ethyl) hexyloxy] ethyl ester of (Z) - butenedioic acid with p-toluenesulfonic acid as catalyst was investigated and the esterification reaction conditions were optimized and the new anionic surfactant The optimum conditions for the esterification reaction were as follows: the mole ratio of alcohol to anhydride was 4:1, the amount of catalyst was about The total mass of the reactants was 0.8%, and 120 mL of benzene was taken as the water-carrying agent and reacted at reflux for 6 h. The final esterification rate was 95.8%.