摘要
π配体催化剂与离子液体体系相结合有助于解决反应效率、产物分离和催化剂循环等一系列均相催化体系不易解决的难题 .近几年相关的研究逐渐深入 ,由简单地使用离子液体作为π配体催化反应的介质向利用离子液体自身结构的方向发展 ,相继出现了几类不同的研究思路 .例如 ,利用π配体催化剂与离子液体形成络合物 ,使用离子型π配体改善催化剂在离子液体中的溶解性 ,以及合成功能化阳离子或功能化阴离子的π配体离子液体 .本文结合这几类离子液体化学键联π配体 (简称π配体离子液体 )的研究进展 ,从离子液体功能化设计的角度探讨了π配体离子液体的合成思路 ,为设计具有更好催化性能的功能化离子液体体系提供借鉴 .
The π-acceptor ligand catalysts have been extensively used in fundamental research and industry. Combination of the π-acceptor catalysts and ionic liquids via chemical bonds has led to a novel catalytic system of π-acceptor ligand ionic liquids. This is beneficial not only to improving the reaction rate and selectivity, but also to addressing the problems of catalyst separation and recycling typically encountered in homogeneous catalytic processes. In addition, the utilization of ionic π-acceptor ligands can increase the solubility of catalysts in ionic liquids. There are several approaches to obtain π-acceptor ligand ionic liquids, such as the formation of π-acceptor catalyst-ionic liquid complexes and the synthesis of π-acceptor ligand ionic liquids by functionalizing the cations or anions of ionic liquids. These approaches and the resulting π-acceptor ligand ionic liquids are reviewed in this paper, especially from the viewpoint of designing functionalized ionic liquids.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2005年第3期253-260,共8页
基金
国家重点基础研究发展规划 (973计划 )资助项目 (G2 0 0 0 0 480 0 2)
关键词
离子液体
功能化
π配体
π配体离子液体
液液两相催化
ionic liquid, functionalization, π-acceptor ligand, π-acceptor ligand ionic liquid, liquid-liquid biphasic catalysis
