Enantioselective borohydride reduction of ketones catalyzed by optically active cobalt(II) complexes: Achievement of high enantioselection by modified borohydrides with furfuryl alcohol derivatives

被引:38
|
作者
Sugi, KD [1 ]
Nagata, T [1 ]
Yamada, T [1 ]
Mukaiyama, T [1 ]
机构
[1] SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
关键词
D O I
10.1246/cl.1996.737
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The enantioselective borohydride reduction of ketones catalyzed by optically active (beta-oxoaldiminato) cobalt(II) complexes was remarkably improved by using the borohydride which was modified with furfuryl alcohol derivatives and ethanol. In the presence of 1 mol% of the above complex catalysts, asymmetric reduction of aromatic ketones proceeded smoothly to give the corresponding optically active alcohols in quantitative yields within 6-12 h with high enantiomeric excesses (90-97% ee).
引用
收藏
页码:737 / 738
页数:2
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