Assembly of chiral monodentate ligands to chelates by donor–acceptor interactions
作者:Olivier Chuzel、Caroline Magnier-Bouvier、Emmanuelle Schulz
DOI:10.1016/j.tetasy.2008.04.008
日期:2008.5
The first examples of assembling monodentate oxazoline donor and acceptor ligands by charge transfer interactions are described to mimic bidentate ligands in asymmetric catalysis. The corresponding copper(II) complexes were used in an enantioselective Diels-Alder reaction and showed very high efficiency, but only moderate stereoselectivity. These complexes were successfully recovered and reused after precipitation in pentane. (C) 2008 Elsevier Ltd. All rights reserved.