Aqueous enantioselective hydrogenations involving silica-heterogenised catalysts

被引：24

作者：

Jamis, J ^{[1
]}

Anderson, JR ^{[1
]}

Dickson, RS ^{[1
]}

Campi, EM ^{[1
]}

Jackson, WR ^{[1
]}

机构：

[1] Monash Univ, Dept Chem, Clayton, Vic 3800, Australia

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2000年 / 603卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

rhodium; ruthenium; asymmetric hydrogenation; aqueous solution; heterogenised catalyst; silica;

D O I：

10.1016/S0022-328X(00)00127-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A mesoporous silica (HMS) has been prepared with an average pore size of 26 Angstrom. The pores have been shown to include typical chiral catalysts for enantioselective hydrogenation viz Rh-BPPM and Ru-BINAP. The heterogenised catalysts have been shown to be effective for hydrogenations of water-soluble alkenes, e.g. itaconic acid 3 and the sodium salt of N-acetamidocinnamic acid (1a). Modest enantioselectivity was achieved for hydrogenation of the cinnamic acid derivative (40-60% ee) but only poor values for the itaconic acid (0 less than or equal to 16% ee). In some cases, the catalysts could be recovered and reused without significant loss of activity or selectivity. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：80 / 85

页数：6

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