Modular amino acids-based chiral ligands for copper-catalyzed enantioselective conjugation addition of diethylzinc to cyclic enones
作者:Shaohua Gou、Zaher M. A. Judeh
DOI:10.1002/chir.20881
日期:2011.2
New amino acid‐based modular chiral ligands were readily synthesized and used to catalyze the asymmetric conjugate addition of Et2Zn to various cyclic enones in the presence of a variety of copper sources. Moderately high ee of up to 72% were obtained using ligand (S)‐1e under mild conditions. Chirality 2011. © 2010 Wiley‐Liss, Inc.
新的基于氨基酸的模块化手性配体易于合成,并用于在多种铜源存在的情况下,将Et 2 Zn不对称共轭加成到各种环状烯酮上。在温和的条件下使用配体(S)-1e获得了高达72%的中等ee。手性2011。©2010 Wiley-Liss,Inc.。