Synthesis of chiral bis(oxazolinyl)biferrocene ligands and their application to Cu(I)-catalyzed asymmetric cyclopropanation

被引：50
|
作者：
Kim, SG
Cho, CW
Ahn, KH
机构：
[1] POHANG UNIV SCI & TECHNOL,DEPT CHEM,POHANG 790784,SOUTH KOREA
[2] POHANG UNIV SCI & TECHNOL,CTR BIOFUNCT MOL,POHANG 790784,SOUTH KOREA
来源：
TETRAHEDRON-ASYMMETRY | 1997年 / 8卷 / 07期
基金：
新加坡国家研究基金会;
关键词：
D O I：
10.1016/S0957-4166(97)00097-9
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Homochiral bis(oxazolinyl)biferrocene ligands, which have both planar and central chirality, are synthesized from oxazolinylfenocenes through a diastereoselective directed lithiation followed by an oxidative dimerization. Asymmetric cyclopropanation of styrene with diazoacetates in the presence of 5 mol% CuOTf-bis(oxazolinyl)biferrocene complexes gives 2-(phenyl)cyclopropane carboxylates in up to 99% ee. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：1023 / 1026
页数：4
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