Catalytic asymmetric epoxidation of α,β-unsaturated ketones using polymeric BINOL

被引：19

作者：

Jayaprakash, D

Kobayashi, Y

Arai, T

Hu, QS

Zheng, XF

Pu, L

Sasai, H ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan

[2] Univ Virginia, Dept Chem, Charlottesville, VA 22901 USA

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2003年 / 196卷 / 1-2期

关键词：

asymmetric catalysis; polymeric BINOL ligands; lanthanum and ytterbium complex; epoxidation;

D O I：

10.1016/S1381-1169(02)00644-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ability of the lanthanoid complexes generated with polymeric BINOL ligands in promoting the catalytic asymmetric epoxidation of chalcone and benzalacetone was explored. In the presence of additives like water and PPh3=O the catalysts afforded the product epoxides in good yield with modest enantioselectivity. The heterogeneous nature of these catalysts facilitates the recovery and reuse. (C) 2002 Elsevier Science B.V. All rights reserved.

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收藏

页码：145 / 149

页数：5

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