A cascade of Pd-catalyzed N-to-C allyl transfer–intramolecular ketenimine–[2 + 2] cycloadditions of N-allyl ynamides is described. This tandem sequence is highly stereoselective and the [2 + 2] cycloaddition could be rendered in a crossed or fused manner depending on alkene substitutions, leading to bridged and fused bicycloimines.
描述了 Pd 催化的 N-to - C 烯丙基转移 - 分子内烯酮
亚胺 - [2 + 2] N - 烯丙基炔酰胺的环加成反应的级联反应。这种串联序列具有高度立体选择性,并且 [2 + 2] 环加成可以根据烯烃取代以交叉或稠合方式呈现,从而产生桥连和稠合的双环
亚胺。