Novel axial chiral catalyst derived from biphenyl ligand bearing only two ortho-substituents

被引：69

作者：

Imai, Y ^{[1
]}

Zhang, WB ^{[1
]}

Kida, T ^{[1
]}

Nakatsuji, Y ^{[1
]}

Ikeda, I ^{[1
]}

机构：

[1] OSAKA UNIV,FAC ENGN,DEPT APPL CHEM,SUITA,OSAKA 565,JAPAN

来源：

TETRAHEDRON LETTERS | 1997年 / 38卷 / 15期

关键词：

D O I：

10.1016/S0040-4039(97)00428-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The two diastereomers of novel C-2-symmetric bisoxazoline ligand bearing only two ortho-substituents 4 exist in equilibrium in solution, However, when the ligand was coordinated with Cu(I), only one of the two possible diastereomeric complexes, 5-(S,S,S), was formed. With this complex as a chiral catalyst, up to 92% ee was attained for the asymmetric cyclopropanation of styrene with diazoacetate. (C) 1997 Elsevier Science Ltd.

引用

页码：2681 / 2684

页数：4

共 23 条

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