499982-00-2

Upstream product

• 100-34-5 benzene diazonium chloride 
• 91323-05-6 ZIN⁽⁴⁷⁷⁾C₀₀₉₁₂ 

Downstream Products

• 107553-43-5 2,4-diphenylbenzimidazo<1,2-a>pyrimidine 
• 29540-87-2 1,2-diaminobenzimidazole 

Relevant academic research and scientific papers

Condensed imidazo-1,2,4-azines. 31*. Synthesis and chemical transformations of substituted 1,2,4-triazepino[2,3-a]benzimidazoles

By reaction of 1,2-diaminobenzimidazole with 1,3-diketones, acetoacetic ester and its derivatives, we have synthesized substituted 1,2,4-triazepino[2,3-a]benzimidazole and 5H-1,2,4-triazepino[2,3-a]-benzimidazol-4-one. By reaction of 5H-2-methyl-1,2,4-triazepino[2,3-a] benzimidazol-4-one with aromatic aldehydes or phenyldiazonium chloride, we have obtained 3-arylidene(phenylazo) derivatives of this compound, and by reaction with P2S5 we have obtained 5H-2-methyl-1,2,4-triazepino[2,3-a]-benzimidazole-4-thione. We have shown that when reacted with ammonia, primary or secondary amines, the latter forms 4-amino-substituted 2methy-1,2,4-triazepino[2,3-a] benzimidazole.