General Synthesis of 1-Aryl-6-azaisocytosines and Their Utilization for the Preparation of Related Condensed 1,2,4-Triazines
作者:František Zálešák、Jan Slouka、Jakub Stýskala
DOI:10.3390/molecules24193558
日期:——
2-arylhydrazono-2-cyanoacetylcyanamides 3. The 6-azaisocytosines 4 were studied with respect to tautomeric equilibrium and the transformation of functional groups, and used in the synthesis of the condensed heterocyclic compounds: Purine isosteric imidazo[2,1-c]-[1,2,4]triazine 8 and the 1,2,4-triazino[2,3-a]quinazolines 9–12.
描述了 1-aryl-6-azaisocytosine-5-carbonitriles 4 的简单一般合成。该方法基于将重氮盐与氰基乙酰氰胺 2 偶联,然后将形成的 2-芳基肼基-2-氰基乙酰氰胺 3 环化。 研究了 6-氮杂异胞嘧啶 4 的互变异构平衡和官能团转化,并将其用于合成稠合杂环化合物:嘌呤等排咪唑并[2,1-c]-[1,2,4]三嗪8和1,2,4-三嗪基[2,3-a]喹唑啉9-12。