催化合成(Z)-丁烯二酸二[2-(2-乙基)己氧基]乙酯的条件优化  

The optimized conditions in catalytic synthesis of bis[2-(2-ethylhexyloxy) ethyl] (Z)-butenedioic ester

作　　者：刘成站[1] 陈劼[1] 褚莹[1] 刘景林[1] 韩秀梅[1] 朱国里[2] 

机构地区：[1]东北师范大学化学学院,吉林长春130024 [2]长春教育学院化学系,吉林长春130061

出　　处：《东北师大学报（自然科学版）》2001年第2期44-46,共3页Journal of Northeast Normal University(Natural Science Edition)

基　　金：吉林省科委基金资助项目 (吉科合字第 990 551号 )

摘　　要：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 intermediate, bis[2-(2-ethylhexyloxy)ethyl] ( Z )-butenedioic ester, was synthesized using p-toluene sulphonic acid as catalyst. The reaction conditions of esterification were investigated and optimized. The synthetic conditions of a new anioic surfactact sodium bis[2-(2-ethylhexyloxy)ethyl] suifosuccinate were perfected. The optimum conditions of esterification are as follows: the ratio of alcohol to anhydride is 4∶1, the amount of the catalyst is 0.8 percent of the total weight of the reaction masses, benzene (120 mL) is the agent to take water out, the reaction is carried on about 6 hours in reflux state, and the final ester rate can come up to 95.8%.

关 键 词：对甲苯磺酸 催化剂 合成 条件优化 酯化反应 (Z)-丁烯二酸二[2-(2-乙基己氧基)]乙酯 

分 类 号：O623.624[理学—有机化学]