The synthesis of new chiral salen complexes immobilized on MCM-41 by grafting and their catalytic activity in the asymmetric borohydride reduction of ketones

被引：32

作者：

Kim, GJ ^{[1
]}

Shin, JH ^{[1
]}

机构：

[1] Inha Univ, Dept Chem Engn, Inchon 402751, South Korea

来源：

CATALYSIS LETTERS | 1999年 / 63卷 / 3-4期

关键词：

MCM-41; immobilization; grafting; chiral salen; reduction; 2,6-diformyl-4-tert-butylphenol;

D O I：

10.1023/A:1019002028952

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 new chiral salen complexes were synthesized and supported on mesoporous MCM-41 through the condensation of 3-aminopropyltrimethoxysilane and 2,6-diformyl-4-tert-butylphenol by the multi-grafting method. The immobilized optically active Co(II) salen complexes showed a very high enantioselectivity in the asymmetric borohydride reduction of aromatic ketones. The chiral salen Co(II) complexes immobilized over MCM-41 were stable during the reaction and exhibited a relatively high enantioselectivity for the reduction of ketones as compared with the homogeneous salen catalysts.

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页码：205 / 212

页数：8

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