Asymmetric epoxidation catalyzed by novel azacrown ether-type chiral quaternary ammonium salts under phase-transfer catalytic conditions

被引：35

作者：

Hori, K ^{[1
]}

Tamura, M ^{[1
]}

Tani, K ^{[1
]}

Nishiwaki, N ^{[1
]}

Ariga, M ^{[1
]}

Tohda, Y ^{[1
]}

机构：

[1] Osaka Kyoiku Univ, Div Nat Sci, Osaka 5828582, Japan

来源：

TETRAHEDRON LETTERS | 2006年 / 47卷 / 18期

关键词：

chiral phase-transfer catalyst; azacrown ether; asymmetric epoxidation;

D O I：

10.1016/j.tetlet.2006.02.142

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Asymmetric epoxidation of (E)-chalcone with alkaline hydrogen peroxide by novel chiral phase-transfer catalysts (chiral PTCs) with quaternary ammonium salts of azacrown ether proceeded in high yield and good enantioselectivity. Remarkably, this reaction depended on the length of the carbon chain on the nitrogen atom with the chiral PTCs and on the bulk of the base. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：3115 / 3118

页数：4

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