Stereoselective Aldol Additions of Achiral Ethyl Ketone-Derived Trichlorosilyl Enolates
作者:Scott E. Denmark、Son M. Pham
DOI:10.1021/jo034092x
日期:2003.6.1
ethyl ketoneenolates have been developed. The addition of enoxy(trichlorosilanes) (trichlorosilylenolates) to aldehydes proceeds with good yields in the presence of catalytic amounts of chiral phosphoramides. The reaction of Z-trichlorosilyl enolates to aryl aldehydes affords aldol products with good to excellent diastereo- and enantioselectivities. Phosphoramide-catalyzed aldoladditions lacked