摘要
通过油酸和N,N-二甲基丙二胺的叔胺化反应及叔胺和氯乙酸钠的亲核取代反应合成了油酸酰胺丙基二甲基胺羧基甜菜碱,运用液相色谱法研究了影响油酸转化率的主要工艺措施,并与传统的胺值滴定法分析结果进行了对比。结果发现:采取升高温度、延长反应时间、尽早脱水等措施,可以有效提高油酸的转化率。在175℃、反应8h、5h开始分水的条件下油酸的转化率最高约为78.75%。利用红外光谱、核磁共振确证了目标产物的结构。
Oleyl amidopropyl dimethylamine carboxyl betaine was prepared by tertiary amine reaction of oleic acid and N, N-dimethyl-1,3-propanediamine and nucleophilic substitution reaction of tertiary and sodium chloroacetate. The main process measures to influence conversion rate of oleic acid were studied using liquid chromatography, and then compared with conventional amine value titration re- suits. Analysis shows that elevating temperature, extending reaction time and early dehydration can improve the conversion of oleic acid. Reacted at 175 ℃ for 8 h, watershed after 5h conditions, oleic acid conversion rate reach the peak about 78.75%. Synthesis products of oleic acid amide betaine were characterized by IR and NMR. Structure displayed by spectrum was consistent with target product.
出处
《精细石油化工》
CAS
CSCD
北大核心
2015年第1期38-41,共4页
Speciality Petrochemicals
基金
山东省自然科学基金(J1202024)
中国博士后科学基金资助项目(2014M551988)
山东省博士后创新项目专项资金资助(201302016)
关键词
油酸酰胺丙基甜菜碱
液相色谱
转化率
红外光谱
核磁共振
oleyl amidopropyl betaine
liquid chromatography
conversion
infrared
nuclear magnetic resonance
