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.
引用
收藏
页码:1561 / 1568
页数:8
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