Diversity Oriented Synthesis of Indoloazepinobenzimidazole and Benzimidazotriazolobenzodiazepine from<i>N</i><sup>1</sup>-Alkyne-1,2-diamines
作者:Ravi Kumar、Rajesh K. Arigela、Srinivas Samala、Bijoy Kundu
DOI:10.1002/chem.201502956
日期:2015.12.14
oriented synthesis of two N‐polyheterocycles indoloazepinobenzimidazole and benzimidazotriazolobenzodiazepine from a common N1‐alkyne‐1,2‐diamine building block is described. The approach involves sequential formation of benzimidazole through cyclocondensation and oxidation, which is followed by the formation of either an azepine ring (through alkyne activation and 6‐endo‐dig cyclization, 1,2‐migration
描述了一种从一个常见的N 1-炔烃1,2-二胺结构单元合成两个N杂环的吲哚并氮杂三唑并苯并咪唑三唑并苯并二氮杂pine的一站式实验方案。该方法涉及通过环缩合和氧化顺序形成苯并咪唑,然后形成氮杂环(通过炔烃活化和6-内挖-环化,1,2-环扩环迁移和再芳构化), 1,3-偶极环加成反应生成二氮杂或三唑环。