Ionic liquids incorporating camphorsulfonamide units for the Ti-promoted asymmetric diethylzinc addition to benzaldehyde

被引：49

作者：

Gadenne, B ^{[1
]}

Hesemann, P ^{[1
]}

Moreau, JJE ^{[1
]}

机构：

[1] ENSCM, CNRS, UMR 5076, Heterochim Mol & Macromol, F-34296 Montpellier, France

来源：

TETRAHEDRON LETTERS | 2004年 / 45卷 / 44期

关键词：

ionic liquids; asymmetric catalysis; chiral auxiliaries;

D O I：

10.1016/j.tetlet.2004.09.038

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

New hydrophobic ionic liquids containing chiral camphorsulfonamide units were used as chiral auxiliaries in the titanium catalyzed asymmetric diethylzinc addition to benzaldehyde. The ionic catalyst system shows catalytic properties similar to those of related nonionic counterparts in terms of activity and enantioselectivity. Interestingly, the ionic ligands can easily be recycled and reused without loss of activity or selectivity. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：8157 / 8160

页数：4

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