Chiral ion pairs in catalysis: lithium salts of chiral metallocomplex anions as catalysts for asymmetric C-C bond formation

被引：34
|
作者：
Belokon', Yuri N. [1 ]
Maleev, Victor I. [1 ]
Kataev, Dmitri A. [1 ]
Saveleva, Tatiana F. [1 ]
Skrupskaya, Tatiana V. [1 ]
Nelyubina, Yulia V. [1 ]
North, Michael [2 ,3 ]
机构：
[1] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia
[2] Newcastle Univ, Sch Chem, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Newcastle Univ, Univ Res Ctr Catalysis & Intensified Proc, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
来源：
TETRAHEDRON-ASYMMETRY | 2009年 / 20卷 / 15期
关键词：
METAL CATALYSIS; ACID; COMPLEXES; COUNTERANIONS; POTASSIUM;
D O I：
10.1016/j.tetasy.2009.06.006
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of Co(III) anionic complexes of Schiff bases obtained from substituted salicylaldehydes and optically active amino acids has been synthesized. The ion pairing of these anions to a lithium cation can be used to induce asymmetry into lithium-catalyzed trimethylsilylcyanation of aldehydes and Michael reactions. The influence of the temperature. solvent polarity and structural modification of the chiral anion on the enantioselectivity of the catalysis has been investigated. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1746 / 1752
页数：7
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