丙烯酸五溴苄酯的合成研究  

Synthesis of Pentabromobenzyl Acrylate

作　　者：张志强[1,2] 谢守民 杨前华 李亚情 张玉清[1] 

机构地区：[1]河南科技大学化工与制药学院,河南洛阳471003 [2]平顶山神马工程塑料公司研发处,河南平顶山467003

出　　处：《工程塑料应用》2013年第2期92-95,共4页Engineering Plastics Application

摘　　要：以五溴甲苯、液溴和丙烯酸钠为原材料,采用一锅法合成反应型阻燃剂丙烯酸五溴苄酯。考察了原材料配比、反应温度和反应时间对丙烯酸五溴苄酯产率的影响,确定了最佳合成条件:五溴甲苯、液溴和丙烯酸钠的物质的量比为1∶1.3∶1.1,自由基取代反应的温度为80℃,亲核取代反应的温度为100℃,自由基取代反应的时间为2.5 h,亲核取代反应的时间为4 h。运用红外光谱和核磁共振氢谱对合成产物进行了结构表征,结果表明,合成产物即为目标产物丙烯酸五溴苄酯。与传统合成方法相比,一锅法工艺简单,成本低,易于工业化。Pentabromobenzyl acrylate was synthesized with pentabromotoluene, bromine and sodium acrylate by means of one-pot reaction. The effects of amount of substance ratio of raw materials, reaction temperature and time on the yield of pentabromobenzyl acrylate were studied. The optimum conditions of synthesis are as follows ： amount of substance ratio of pentabromotoluene, bromine and sodium acrylate is 1 ： 1.3 ： 1.1, temperatures of radical reaction and nucleophilic substitution reaction are 80℃ and 100℃ respectively, time of radical reaction and nucleophilic substitution reaction are 2.5 h and 4 h respec- tively. The structure of synthetic product were characterized by FTIR and ^1H NMR, The results show that synthetic product is target product pentabromobenzyl acrylate. Comparing with the traditional method, one-pot reaction has the advantages of simple process, low cost and easy industrialization.

关 键 词：反应型阻燃剂 丙烯酸五溴苄酯 五溴甲苯 五溴苄基溴 合成 

分 类 号：TQ245.3[化学工程—有机化工]