L-Proline catalysed asymmetric aldol reactions in PEG-400 as recyclable medium and transfer aldol reactions

被引：126
作者：
Chandrasekhar, S [1 ]
Reddy, NR [1 ]
Sultana, SS [1 ]
Narsihmulu, C [1 ]
Reddy, KV [1 ]
机构：
[1] Indian Inst Chem Technol, Hyderabad 500007, Andhra Pradesh, India
来源：
TETRAHEDRON | 2006年 / 62卷 / 2-3期
关键词：
L-proline; PEG-400; aldol reaction; transfer aldol reaction;
D O I：
10.1016/j.tet.2005.09.122
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
L-Proline-catalysed direct asymmetric aldol reaction of acetone with various aldehydes in PEG-400 is described. Recycling of the catalyst and solvent (PEG) was possible up to ten runs without loss of catalyst activity. L-Proline was also found to be an efficient catalyst for the asymmetric transfer aldol reaction between various aldehydes and diacetone alcohol for the first time. Good yields and enantioselectivities were observed with both methods. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：338 / 345
页数：8
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