Chiral mesoporous templated silicas as heterogeneous inorganic-organic catalysts in the enantioselective alkylation of benzaldehyde

被引:57
作者
Laspéras, M [1 ]
Bellocq, N [1 ]
Brunel, D [1 ]
Moreau, P [1 ]
机构
[1] Ecole Natl Super Chim Montpellier, CNRS UMR 5618, Lab Mat Catalyt & Catalyse Chim Organ, F-34296 Montpellier 5, France
关键词
D O I
10.1016/S0957-4166(98)00294-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
New mesoporous templated silicas of the MCM-41 family covalently linked to chiral ephedrine are used as heterogeneous chiral auxiliaries in the enantioselective alkylation of benzaldehyde by diethylzinc. Promising results are obtained with these inorganic-organic catalysts. Various factors which may affect the activity, selectivity and enantioselectivity are studied. Comparison with homogeneous catalysis is carried out. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3053 / 3064
页数:12
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