Enantioselective hydrogenation on zeolite-encapsulated chiral palladium-salen complexes

被引：22

作者：

Ernst, S ^{[1
]}

Fuchs, E ^{[1
]}

Yang, X ^{[1
]}

机构：

[1] Univ Kaiserslautern, Dept Chem Chem Technol, D-67653 Kaiserslautern, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2000年 / 35-6卷

关键词：

catalysis; enantioselective hydrogenation; palladium-salen complexes; ship-in-the-bottle catalysts;

D O I：

10.1016/S1387-1811(99)00214-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The preparation of palladium complexes of the chiral salen-type ligand (R,R)-N',N'-bis-(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediamine (salen*) in the intracrystalline cavities of zeolites with the FAU and the EMT framework topology is reported. The host/guest compounds obtained are active catalysts for the hydrogenation of olefinic double bonds. Using 3-methyl-2-cyclohexenone as prochiral feed, it is demonstrated for the first time that enantioselective hydrogenation over zeolite-encapsulated palladium-salen* complexes is possible. So far, an enantiomeric excess of ca. 7% can be achieved. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：137 / 142

页数：6

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