2-辛基十二烷基缩水甘油醚的合成  

A SYNTHESIS OF 2-OCTYL DODECYL ETHER

作　　者：丁伟[1] 景慧[1] 于涛[1] 曲广淼[1] 孙颖[1] 

机构地区：[1]东北石油大学化学化工学院,黑龙江大庆163318

出　　处：《西南石油大学学报（自然科学版）》2011年第1期144-146,21,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重点基础研究规划"973"项目(2005CB221300)

摘　　要：以固体氢氧化钠、格尔伯特二十醇和环氧氯丙烷为原料,采用四丁基溴化铵为相转移催化剂,合成了2-辛基十二烷基缩水甘油醚。讨论了原料摩尔比、四丁基溴化铵的用量、反应温度、反应时间对反应产率的影响。最终确定最佳反应条件是:n(格尔伯特二十醇)∶n(环氧氯丙烷)∶n(固体氢氧化钠)=1.00∶1.15∶1.20;四丁基溴化铵用量为0.05(相对醇的摩尔比);反应温度为50℃;反应时间为4 h。在此条件下可得产率为79.8%的2-辛基十二烷基缩水甘油醚,用盐酸-丙酮法测得其环氧值为0.232。最终产物结构通过红外光谱分析得到证实。2-octyl dodecyl ether is synthesized from solid sodium hydroxide,Guerbet alcohol and epichlorohydrin by phase-transfer catalysis-tetrabutyl ammonium.Effects of molar ratio of raw materials,amount of catalyst,reaction temperature and reaction time on the yield of 2-octyl dodecyl ether are discussed.The final determined optimum conditions are that n(Guerbet alcohol)∶n(epichlorohydrin)∶n(Solid caustic soda)=1.00∶1.15∶1.20,the amount of catalyst is 0.05(relative to alcohol molar ratio),reaction temperature and time are at 50℃ for 4 hours.Under these conditions,2-octyl dodecyl ether can be obtained at 79.8% yield rate.The epoxy value measured by hydrochloric acid-acetone method is 0.232.The final product structure is confirmed by infrared spectroscopy.

关 键 词：相转移催化剂 2-辛基十二烷基缩水甘油醚 格尔伯特二十醇 环氧值 环氧氯丙烷 

分 类 号：TQ223.2[化学工程—有机化工]