Reactivity of asymmetric benzo-condensed diazines with nitrilimine dipoles in the 1,3-dipolar cycloaddition reactions
作者:Antonino Lauria、Annalisa Guarcello、Gabriella Macaluso、Gaetano Dattolo、Anna Maria Almerico
DOI:10.1016/j.tetlet.2009.10.062
日期:2009.12
The reactivity of asymmetric benzo-condensed diazines in the 1,3-dipolar cycloaddition reactions with nitrilimines was investigated. The results demonstrated that, at variance with the symmetric quinoxaline, a certain grade of diastereoselectivity emerged. Moreover in the case of the 5-methylquinoxaline and quinazoline a mono-cycloadduct was obtained.