摘要
利用十六烷基三甲基溴化铵催化氯乙酸和对甲苯酚合成对甲苯氧乙酸,十六烷基三甲基溴化铵具有较高的催化活性,可以加快合成对甲苯氧乙酸。考察了对甲苯酚与氯乙酸摩尔比、催化剂用量、反应时间、反应温度对产率的影响以及催化剂的重复使用性能。反应的最佳条件为:在80℃下,对甲苯酚和氯乙酸的摩尔比为1∶2,催化剂质量为0.2 g,反应时间2.5 h,此反应所得到的对甲苯氧乙酸的产率为51.93%。该催化剂的用量很少,易于回收,并且可以重复使用。
Applied cetyltrimethylammonium bromide as catalyst, 4-methyl-phenoxyacetic acid was synthesized with chloroacetate and 4-methyl phenol. Cetyltrimethylammonium bromide had higher catalytic activity and could be accelerate the synthesis of 4- methyl-phenoxyacetic acid. Molar ratio of 4-methyl phenol to chloroacetic acid, catalyst amount, reaction time and reaction temperature on yield and performance of the repeated use of catalyst was studied. The best reaction conditions were as followed: under 80℃, molar ratio of 4-methyl phenol to chloroacetate 1:2, catalyst weight of 0.2 g, reaction time was 2.5h. This yield of 4- methyl-phenoxyacetic acid was 51.93 %.
出处
《化工技术与开发》
CAS
2010年第10期1-3,共3页
Technology & Development of Chemical Industry
基金
广西自然科学基金课题(桂科自0899022)
广西教育厅课题(200710LX149)
关键词
对甲苯氧乙酸
氯乙酸
对甲苯酚
十六烷基三甲基溴化铵
合成
4-methyl-phenoxyaceticacid
chloroacetate
4-methylphenol
cetyltrimethylammoniurnbromide
synthesis
作者简介
农邦写(1986-),男,广西百色市人,本科在读,研究方向:有机合成
通讯联系人:黄锁义(1964-),男,广西南宁市人,药学系副主任,教授,硕士研究生导师,主要从事医用化学的教学和科研工作,E—mail:huangsuoyi@l63.com,3507768926(手机),0776—2830958(宅),0776-2850590(办)