81607-89-8

Upstream product

• 81608-02-8 1,2-dihydro-3-(2-benzimidazolyl)-6-hydroxy-4-methylpyridin-2-one 
• 81608-03-9 1,2-dihydro-3-(2-benzimidazolyl)-6-hydroxy-1,4-dimethylpyridin-2-one 
• 5444-02-0 3-cyano-4-methyl-6-hydroxypyrid-2-one 
• 27074-03-9 1,4-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-pyridine-3-carbonitrile 
• 95-54-5 1,2-diamino-benzene 
• 4346-59-2 para-methoxyphenyldiazonium chloride 
• 81608-01-7 2-(2-benzimidazolyl)-3-methyl-1-oxo-1H,5H-pyrido<1,2-a>benzimidazole 

Relevant academic research and scientific papers

Synthesis of Benzimidazole-substituted Pyridone Azo Disperse Dyes

1-Substituted-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridinecarbonitriles (I) on treatment with 1,2-diaminobenzene (II) in polyphosphoric acid yield 1-substituted-1,2-dihydro-3-(2-benzimidazolyl)-6-hydroxy-4-methylpyridin-2-ones (IV).IV on treatment with