The Effects of a Remote Stereogenic Center in the Lewis Base Catalyzed Aldol Additions of Chiral Trichlorosilyl Enolates
作者:Scott E. Denmark、Shinji Fujimori
DOI:10.1021/ol026594n
日期:2002.10.1
Chiral trichlorosilylenolates bearing a remote stereogenic center were employed in the phosphoramide-catalyzed aldol reaction. The additions of the methyl ketoneenolates proceeded with only moderate diastereoselectivities. The addition of the Z-enolate to various aldehydes selectively produced the syn relative diastereomers. In both cases, the effect of the beta-silyloxy stereogenic center was modest