223508-38-1Relevant articles and documents
Syntheses of [1,2,4]triazolo[1,5-: A] benzazoles enabled by the transition-metal-free oxidative N-N bond formation
Shang, Erchang,Zhang, Junzhi,Bai, Jinyi,Wang, Zhan,Li, Xiang,Zhu, Bing,Lei, Xiaoguang
, p. 7028 - 7031 (2016)
A transition-metal-free oxidative N-N bond formation strategy was developed to generate various structurally interesting [1,2,4]triazolo[1,5-a]benzazoles efficiently. The mechanism of the key oxidative N-N bond formation was investigated by using an intramolecular competition reaction. Notably, the first single crystal structure was also obtained to confirm the structure of 2-aryl[1,2,4]triazolo[1,5-a]benzimidazole.
A convenient approach to the synthesis of 2-aryl-4-alkyl-1,3,5-triazino[1,2-a]benzimidazoles
Sambaiah
, p. 1283 - 1285 (2007/10/03)
The reaction of 2-aminobenzimidazole 1 with benzonitrile in the presence of anhydrous stannic chloride gives N-(benzimidazol-2-yl)arylamidines 2 in 65-82% yield. Cyclocondensation of 2 with triethyl orthoesters affords 2-aryl-4-alkyl-1,3,5-triazino[1,2-a]