Synthesis of 1,2,3-Triazolium Ionic Liquid-Supported Chiral Imidazolidinones and Their Application in Asymmetric Alkylation Reaction
作者:Yunkyung Jeong、Yunjeong Park、Jae-Sang Ryu
DOI:10.3390/molecules24183349
日期:——
ionic liquid-supported chiral imidazolidinones were developed. The feasibility of the ionic liquid-supported imidazolidinones as chiral auxiliaries was demonstrated in sequential propionylation-alkylation-cleavage reactions, which provided the chiral product with good to excellent chemical yields (up to 90%) and high selectivities (up to 94% ee). The progress of the reactions could be monitored by TLC
开发了新的 1,2,3-三唑鎓离子液体负载手性咪唑烷酮。在连续的丙酰化-烷基化-裂解反应中证明了离子液体负载的咪唑烷酮作为手性助剂的可行性,这为手性产物提供了良好到优异的化学产率(高达 90%)和高选择性(高达 94% ee) . 反应过程可以通过薄层色谱和核磁共振监测,离子液体负载的手性助剂可以通过简单的萃取回收。