Rapid, One-Pot Synthesis of β-Siloxy-α-haloaldehydes

被引:59
|
作者
Saadi, Jakub [1 ]
Akakura, Matsujiro [2 ]
Yamamoto, Hisashi [1 ]
机构
[1] Univ Chicago, Dept Chem, Chicago, IL 60637 USA
[2] Aichi Univ Educ, Dept Chem, Kariya, Aichi 4488542, Japan
关键词
HETEROATOM-SUBSTITUTED ALDEHYDES; SUPER SILYL GROUP; BRONSTED ACID CATALYST; ALDOL CASCADE REACTION; MEDICINAL CHEMISTRY; STEREOSELECTIVE SYNTHESIS; DIASTEREOSELECTIVE ALDOL; ASYMMETRIC INDUCTION; SEQUENTIAL REACTIONS; ENOL ETHERS;
D O I
10.1021/ja2066169
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The Mukaiyama cross-aldol reaction of alpha-fluoro-, alpha-chloro-, and alpha-bromoacetaldehyde-derived (Z)tris(trimethylsilyl)silyl enol ethers is described, furnishing anti-beta-siloxy-alpha-haloaldehydes. A highly diastereoselective, one-pot, sequential double-aldol process is developed, affording novel beta,delta-bissiloxy-alpha,gamma-bishaloaldehydes. Reactions are catalyzed by C(6)F(5)CHTf(2) and C(6)F(5)CTf(2)AlMe(2) (0.5-1.5 mol %) and provide access to halogenated polyketide fragments.
引用
收藏
页码:14248 / 14251
页数:4
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