Silicon-functionalized silyl enol ethers. Part 2. Silyl enol ethers bearing stereogenic silicon atoms and chiral alkoxy groups: the effect of these groups upon the facial selectivity of the epoxidation of an enol double bond
Influence of enolate geometry on the stereochemistry of Michael additions of ketone enolates to α,β-unsaturated ketones
作者:David A Oare、Clayton H Heathcock
DOI:10.1016/s0040-4039(00)85424-6
日期:1986.1
Preformed lithiumenolates of ketones react with acyclic α,β-unsaturated ketones to give 1,5-diketones in good chemical yields. A strong correlation exists between enolate geometry and product stereochemistry; enolates having the configuration provide anti addition products while enolates usually provide the syn diastereomers.