1,3-ASYMMETRIC INDUCTION IN THE ALDOL ADDITION-REACTIONS OF METHYL KETONE ENOLATES AND ENOLSILANES TO BETA-SUBSTITUTED ALDEHYDES - A MODEL FOR CHIRALITY TRANSFER

被引:116
作者
EVANS, DA
DUFFY, JL
DART, MJ
机构
[1] Department of Chemistry, Harvard University, Cambridge
关键词
D O I
10.1016/S0040-4039(00)78430-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The direction and degree of 1,3-asymmetric induction have been evaluated in the addition of metal enolates and enolsilanes to aldehydes substituted at the beta position with both polar (OR, OAc, Cl) and nonpolar (Me) substituents. A model for 1,3-asymmetric induction for polar addition processes such as the Mukaiyama aldol reaction is proposed to account for the documented trends in reaction diastereoselection for polar beta-substituents.
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页码:8537 / 8540
页数:4
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