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Enantioselective addition of organozinc reagents to aldehydes catalyzed by 3,3′-bis(diphenylphosphinoyl)-BINOL
被引:64
|作者:
Hatano, M
[1
]
Miyamoto, T
[1
]
Ishihara, K
[1
]
机构:
[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
关键词:
asymmetric catalysis;
binaphthol;
diethylzinc;
enantioselective addition;
phosphine oxides;
secondary alcohols;
D O I:
10.1002/adsc.200505221
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
The enantioselective addition of organozinc reagents to aromatic and aliphatic aldehydes I gives secondary alcohols 2 with excellent enantioselectivities in high yields through the catalytic use of (R)-3,3'-bis(diphenylphosphinoyl)-BINOL (3) or (R)-3,3'-bis(diphenylthiophosphinoyl)-BINOL (4) without Ti(IV) complexes. The coordination of the O or S atom of a (thio)phosphinoyl group bearing a BINOL backbone to organozinc reagents can efficiently increase the nucleophilicity of the organozinc reagents.
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页码:1561 / 1568
页数:8
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