40697-75-4

Upstream product

• 934-32-7 1H-benzimidazol-2-amine 
• 100-47-0 benzonitrile 
• 139954-31-7 N-(1H-benzo[d]imidazol-2-yl)benzimidamide 
• 93-97-0 benzoic acid anhydride 
• 29540-87-2 1,2-diaminobenzimidazole 

Downstream Products

• 120625-40-3 4-Benzyl-2-phenyl-4H-1,2,4-triazolo<1,5-a>benzimidazole 
• 124617-82-9 3-Benzyl-2-phenyl-3H-1,2,4-triazolo<1,5-a>benzimidazole 
• 73029-42-2 4-Methyl-2-phenyl-4H-1,2,4-triazolo<1,5-a>benzimidazole 
• 122128-71-6 3-Methyl-2-phenyl-3H-1,2,4-triazolo<1,5-a>benzimidazol 

Relevant academic research and scientific papers

Syntheses of [1,2,4]triazolo[1,5-: A] benzazoles enabled by the transition-metal-free oxidative N-N bond formation

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 facile synthesis of 2-aryltriazolobenzimidazoles

2-Aminobenzimidazoles (1) react with benzonitriles in the presence of anhydrous stannic chloride to give N-(benzimidazol-2-yl)arylamidines (2).Oxidative cyclisation of 2 with lead tetraacetate in dry benzene leads to 2-aryltriazolobenzimidaz

1,2,4-TRIAZOLOBENZIMIDAZOLES: TAUTOMERISM AND ALKYLATION

The position of the tautomeric equilibrium in unsubstituted 1,2,4-triazolobenzimidazole, as well as in its 2-methyl and 2-phenyl derivatives, was investigated by UV, IR, and PMR spectroscopy and by determination of the ionization constants.In all c