Optically active tricarbonyl[.eta.6-o-(trimethylsilyl)benzaldehyde]chromium(0) complexes in organic synthesis: a highly anti-selective asymmetric aldol reaction with O-silyl ketene O,S-acetals
作者:Chisato Mukai、Motonori Miyakawa、Ado Mihira、Miyoji Hanaoka
DOI:10.1021/jo00033a025
日期:1992.3
Treatment of optically pure (+)-tricarbonyl[o-(trimethylsilyl)benzaldehyde]chromium(0), (+)-1, with O-silyl ketene O,S-acetals 4c-f afforded, after decomplexation, the (-)-anti-aldol products (-)-5c-f, while an antipode, (-)-1, provided the (+)-anti ones (+)-5c-f. Optical purity of these aldol products were determined to be in a range of 92 to > 98% ee. The absolute configuration was established by an X-ray crystallographic analysis.