stereoselective method for efficient synthesis of unprecedented bridged bicyclo[7/6,3/2,1]alkenyl amidines is described using cyclic N-allyl-aminoalkyne as a substrate. A ketenimine formation/cyclization/aza-Cope rearrangement cascade proceeds either with or without the aid of external DIPEA depending on substrate basicity. Fused bicycloamidines are also obtained via the same protocol using different N-allyl cyclic
使用环状N-烯丙基-
氨基
炔烃作为底物,描述了一种高效立体合成方法,可有效合成空前的桥联双环[7 / 6,3 / 2,1]烯基enyl 。取决于基质的碱性,在或不借助外部DI
PEA的情况下,进行酮
亚胺的形成/环化/氮杂-Cope重排的级联反应。稠合的双环s也可通过相同的方案,使用不同的N-烯丙基环
氨基
炔烃获得。