Article ID Journal Published Year Pages File Type
55260 Catalysis Today 2013 7 Pages PDF
Abstract

We present design, synthesis and application of basic chiral ionic liquids based on commercially available (S)-proline. This new set of chiral ionic liquids was specifically designed to replace trifluoroacetic acid in enamine-based organocatalysis for asymmetric CC bond formation. Based on their permanent charge, these chiral ionic liquids could be applied as organocatalysts in asymmetric aldol reaction of 4-nitrobenzaldehyde and acetone, and good yields and selectivities up to 80%ee could be obtained without additional acid.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (116 K)Download as PowerPoint slideHighlights► Basic chiral ionic liquids. ► Acid-free asymmetric aldol reaction. ► Ionic liquids for organocatalysis.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
Authors
, , , , , ,