Synthesis of pyrrolo[2,3-c]2,7-naphthyridine derivatives by cascade heterocyclization reaction of 2-amino-4-cyanomethyl-6-dialkylamino-3,5-pyridinedicarbonitriles
作者:Anton V Tverdokhlebov、Elizaveta V Resnyanska、Alexander V Zavada、Andrey A Tolmachev、Alexander N Kostyuk、Alexander N Chernega
DOI:10.1016/j.tet.2004.05.007
日期:2004.6
naphthyridine derivatives with acetic acid anhydride and cyclohexanone yielded 2-dialkylamino-6,8,9,10-tetrahydro-5-methyl-9-oxopyrimido[4,5,6-ij]pyrrolo[2,3-c]2,7-naphthyridine-1-carbonitriles and 2-dialkylamino-4,5,6,8,9,10-hexahydro-9-oxospiropyrimido[4,5,6-ij]pyrrolo[2,3-c]2,7-naphthyridine-5,1′-cyclohexane}-1-carbonitriles, respectively. All fused 2,7-naphthyridines obtained were derivatives of novel
发现标题吡啶二腈与N-取代的氯乙酰胺烷基化,得到5,6-二氨基-8-二烷基氨基-2,3-二氢-2-氧代-1 H-吡咯并[2,3 - c ] 2,7-萘啶-9-腈。通过X射线晶体学研究清楚地证实了所获得的化合物的结构。杂环反应进行区域选择性地涉及起始吡啶的3-CN基团,而没有5-CN参与。讨论了选择性的原因。制备的萘啶衍生物与乙酸酐和环己酮的相互作用产生2-二烷基氨基-6,8,9,10-四氢-5-甲基-9-氧嘧啶基[4,5,6- ij ]吡咯并[2,3- c] 2,7-萘啶-1-腈和2-二烷基氨基-4,5,6,8,9,10-六氢-9-氧杂螺pyrimido [4,5,6- ij ] pyrrolo [2,3- c分别为] 2,7-萘啶-5,1'-环己烷} -1-腈。获得的所有稠合的2,7-萘啶均为新型杂环系统的衍生物。