The first example of enantioselective protonation of prochiral enolates with chiral gamma-hydroxyselenoxides

被引:30
作者
Takahashi, T [1 ]
Nakao, N [1 ]
Koizumi, T [1 ]
机构
[1] TOYAMA MED & PHARMACEUT UNIV, FAC PHARMACEUT SCI, SUGITANI, TOYAMA 93001, JAPAN
关键词
D O I
10.1246/cl.1996.207
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Enantioselective protonation of a simple enolate has been developed using an optically pure gamma-hydroxyselenoxide 1 as a chiral proton source, Reaction of zinc bromide enolate 7b with (S-Se)-selenoxide (S-Se)-1c gave (S)-2-benzylcyclohexanone (S)-8 with high enantioselectivity. Intramolecular hydrogen bonding between hydroxy group and seleninyl-oxygen of 1 would contribute to this asymmetric induction.
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页码:207 / 208
页数:2
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