Combinatorial synthesis of functionalized chiral and doubly chiral ionic liquids and their applications as asymmetric covalent/non-covalent bifunctional organocatalysts
作者:Long Zhang、Sanzhong Luo、Xueling Mi、Song Liu、Yupu Qiao、Hui Xu、Jin-Pei Cheng
DOI:10.1039/b713843a
日期:——
A facile combinatorial strategy was developed for the construction of libraries of functionalized chiral ionic liquids (FCILs) including doubly chiral ionic liquids and bis-functional chiral ionic liquids. These FCIL libraries have the potential to be used as asymmetric catalysts or chiral ligands. As an example, novel asymmetric bifunctional catalysts were developed by simultaneously incorporating functional groups onto the cation and anion. The resultant bis-functionalized CILs showed significantly improved stereoselectivity over the mono-functionalized parent CILs.
研究了一种简便的组合策略,用于构建含有双重手性离子液体和双官能团手性离子液体的功能化手性离子液体(FCILs)库。这些FCIL库有望用作不对称催化剂或手性配体。例如,通过同时将官能团引入阳离子和阴离子,开发了新型的不对称双官能团催化剂。由此产生的双官能团化CILs在立体选择性方面显著优于单官能团化母本CILs。