THE MICHAEL-TYPE REACTION OF LITHIUM 1-ALKYNYLTRIALKYLBORATES WITH METHYL VINYL KETONE IN THE PRESENCE OF TITANIUM TETRACHLORIDE. A NEW SYNTHESIS OF δ-DIKETONES FROM ORGANOBORANES
作者:Shoji Hara、Kotaro Kishimura、Akira Suzuki
DOI:10.1246/cl.1980.221
日期:1980.3.5
1-Alkynyltrialkylborates readily available from trialkylboranes and lithium acetylides react with methyl vinyl ketone in the presence of titaniumtetrachloride followed by hydrogen peroxide oxidation under neutral conditions to give corresponding δ-diketones.