含羰基钴聚醚功能化离子液体合成及其对1-(4-异丁基苯基)乙醇氢酯基化的作用

 全文下载：2014010024

聂涛, 吕志果*, 陈强, 郭振美

（青岛科技大学 化工学院, 山东 青岛 266042）

摘要： 采用氯代1-丁基-3-聚乙二醇咪唑［H(OCH2CH2)nbim］Cl和四羰基钴钾KCo-(CO)4离子交换反应合成含羰基钴聚醚咪唑类功能化离子液体1-丁基-3-聚乙二醇咪唑四羰基钴{［H(OCH2CH2)nbim］Co(CO)4}，并将其应用于催化1-(4-异丁基苯基)乙醇（IBPE）氢酯基化反应制备2-(4-异丁基苯基)丙酸甲酯，对催化剂进行了红外光谱结构确定并提出了可能的催化反应机理。结果表明，在反应温度130 ℃、一氧化碳压力6.0 MPa、反应时间为16 h、咪唑为促进剂、丁酮为溶剂的较佳反应条件下，IBPE的转化率达到100%，2-(4-异丁基苯基)丙酸甲酯的选择性为54%。催化剂重复使用5次，催化活性没有明显的降低。

关键词：2-(4-异丁基苯基)丙酸甲酯; 1-(4-异丁基苯基)乙醇; 氢酯基化反应; 功能化离子液体; 催化

中图分类号：O 643.32   文献标志码：A

A Novel Polyether Functionalized Ionic LiquidContaining Carbonyl Cobalt: Synthesis and Application in

Hydroesterification of 1-(4-Isobutylphenyl)ethanol

 NIE Tao, L Zhiguo, CHEN Qiang, GUO Zhenmei

(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: A novel polyether functionalized ionic liquid containing carbonyl cobalt, 1butyl3polyethylene glycolyl imidazole cobalt tetracarbonyl {\[H(OCH2CH2)nbim\]Co(CO)4}, was prepared by ion exchange reaction between \[H(OCH2CH2)nbim\]Cl and KCo(CO)4 and characterized by FTIR. The obtained ionic liquid was used as catalyst in hydroesterification of 1(4isobutylphenyl) ethanol (IBPE) to produce 2(4isobutylphenyl) methyl propionate, and a possible reaction mechanism was proposed. The obtained optimum conditions were using imidazole as promoter and butanone as solvent, CO pressure 6.0 MPa, reaction temperature 130 ℃ and time16h. Under above conditions, the conversion of IBPE was 100% and the selectivity of 2(4isobutylphenyl) methyl propionate was 54%. The catalyst could be reused five times with no obvious decrease in catalytic activity.

Key words: 2(4isobutylphenyl) methyl propionate; 1(4isobutylphenyl) ethanol; hydroesterification; functionalized ionic liquid; catalysis 

 收稿日期：20130108

基金项目：国家自然科学基金项目（21376128）；山东省自然科学基金项目（ZR2012BL02，ZR2009BL016）；山东省高校科研计划资助项目（J10LB07）.

作者简介：聂涛（1987—), 女, 硕士研究生. *通信联系人.