邻苯二甲酸二烯丙酯的合成

Synthesis of Diallyl Phthalate

以烯丙醇和邻苯二甲酸酐为原料,合成了邻苯二甲酸二烯丙酯,并用IR1、HNMR对邻苯二甲酸二烯丙酯进行了结构表征。系统研究了烯丙醇和邻苯二甲酸酐的摩尔比、对甲苯磺酸用量、阻聚剂种类及用量、带水剂用量对反应的影响,得到的较佳反应条件(以邻苯二甲酸酐0.1 mol计),即:醇酐摩尔比2.4∶1,对甲苯磺酸0.8 g,4-羟基-2,2,6,6-四甲基哌啶氮氧自由基0.32 g,甲苯35 mL,在回流条件下反应至无水生成,在该条件下产物收率可达96.5%。

Diallyl phthalate,the structure of which was identified by IR and 1HNMR,was obtained by allyl alcohol and phthalic anhydride.A series of influential factors to the reaction,such as the mole ratio of allyl alcohol to phthalic anhydride,amount of tosic acid,different kinds and amount of inhibitors and the volume of methylbenzene were investigated.The appropriate reaction conditions are as follows（based on 0.1 mol phthalic anhydride）,n（allyl alcohol）∶n（phthalic anhydride）=2.4∶1,amount of tosic acid 0.8 g and 4-hydroxyl-2,2,6,6-tetramethyl piperidinyloxy nitro-oxide radical 0.32 g,the volume of methylbenzene 35 mL,reacted under reflux condition until no water generated,the yield of diallyl phthalate is about 96.5%.