Either diastereofacial differentiation in the reaction of chiral thiomethylketones with appropriate organometallics
作者:Tamotsu Fujisawa、Isao Takemura、Yutaka Ukaji
DOI:10.1016/s0040-4039(00)97877-8
日期:1990.1
of sulfur atom instead of oxygen into α-position to ketone was found to be crucial for efficient diastereofacial differentiation; i.e., either diastereomer of tertiary alcohol could be obtained by the reaction of organometallics to chiral thiomethylketones derivedfrom (S)-2-mercapto-2-phenylethanol and α-haloketones. For example, MeLi attacked from si-face, while Me2Zn preferred re-facial attack. In