Clay montmorillonite K10 catalyzed aldol-type reaction of aldehydes with silyl enol ethers in water

被引：34

作者：

Loh, TP ^{[1
]}

Li, XR ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore

来源：

TETRAHEDRON | 1999年 / 55卷 / 35期

关键词：

clays; aldol reactions; aldehydes; environmentally friendly; water;

D O I：

10.1016/S0040-4020(99)00594-3

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

An environmentally friendly method for the cross aldol reaction of silyl enol ethers and ketene silyl acetal with various aldehydes using montmorillonite K10 is described. Cheap and commercially available montmorillonite K10 can be used without the need of an ion exchange process under solvent-free conditions or in water. Hydrate of aldehydes such as glyoxylic acid can be used directly. Thermal treatment of K10 increased the catalytic activity. The catalytic activity was supposed due to the properties of the structure of K10 and irs inherent Bronsted acidity. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：10789 / 10802

页数：14