摘要
以Al-Mg基复合氧化物为催化剂,尝试采用环氧乙烷(EO)分子插入γ-丁内酯(GBL)的新反应合成内酯冠醚,用FTIR和ESI-MS对目标产物结构进行了确证。实验结果表明,LE-4催化剂的催化效果最佳;对反应温度和压力的优化实验进一步表明,当使用质量分数1%的LE-4催化剂,EO与GBL的摩尔比为5时,优化反应温度和体系压力分别为160℃和0.65 MPa,GBL转化率达到75.2%。
Lactonic crown ethers were synthesized by a novel insertion reaction of ethylene oxides into γ-butyrolactone（GBL） catalyzed by Al-Mg composite oxide,and the molecular structures of the target products were confirmed by FTIR and ESI-MS.The process was optimized with respect to Al/Mg molar ratio of catalysts,reaction temperature and pressure.The conversion of GBL was 75.2% when the insertion reaction was catalyzed by 1% of LE-4 catalyst based on the target products and run in 5 times molar ratio of EO to GBL at 160 ℃ under 0.65 MPa.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2012年第10期952-954,964,共4页
Fine Chemicals
基金
国家自然科学基金项目(21276113)~~
关键词
内酯冠醚
乙氧基化
嵌入反应
Γ-丁内酯
环氧乙烷
催化技术
lactonic crown ether
ethoxylation
insertion reaction
γ-butyrolactone
ethylene oxide
catalysis technology
