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
论文数: 0引用数: 0
h-index: 0
机构:
SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPANSCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
Sugi, KD
[1
]
Nagata, T
论文数: 0引用数: 0
h-index: 0
机构:
SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPANSCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
Nagata, T
[1
]
Yamada, T
论文数: 0引用数: 0
h-index: 0
机构:
SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPANSCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
Yamada, T
[1
]
Mukaiyama, T
论文数: 0引用数: 0
h-index: 0
机构:
SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPANSCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
Mukaiyama, T
[1
]
机构:
[1] SCI UNIV TOKYO, FAC SCI, DEPT APPL CHEM, SHINJUKU KU, TOKYO 162, JAPAN
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).