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

页码：525 / 528

页数：4

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