Inhibiting deactivation of iridium catalysts with bulky substituents on coordination atoms

被引：39
|
作者：
Wang, Duo-Sheng [2 ]
Zhou, Juan [1 ]
Wang, Da-Wei [2 ]
Guo, Yin-Long [1 ]
Zhou, Yong-Gui [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, Shanghai Mass Spectrometry Ctr, Shanghai 200032, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
来源：
TETRAHEDRON LETTERS | 2010年 / 51卷 / 03期
基金：
美国国家科学基金会;
关键词：
HIGHLY ENANTIOSELECTIVE HYDROGENATION; ASYMMETRIC TRANSFER HYDROGENATION; IR-DIPHOSPHINE CATALYSTS; QUINOLINES; COMPLEXES; LIGANDS; EFFICIENT; VERSATILE; ENHANCEMENT; COUNTERION;
D O I：
10.1016/j.tetlet.2009.11.075
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Introducing bulky groups on the coordination phosphorus atoms can effectively block the formation of inactive dimer species and improve the activity of the iridium catalysts. Results of ESI-MS analysis gave strong evidence. This strategy was successfully applied to the asymmetric hydrogenation of quinolines with up to 93% ee on S/C ratio of 25,000. Crown Copyright (C) 2009 published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：525 / 528
页数：4
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