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Benzimidazole condensed ring systems, III . Synthesis of some substituted 2,3-dihydrocyclopenta-1H-[4′,5′: 2,3]pyrido[1,2-a]benzimidazole-11-carbonitriles

✍ Scribed by El-Sayed A. M. Badawey; Samia M. Rida; Farid S. G. Soliman; Thomas Kappe


Publisher
Springer Vienna
Year
1989
Tongue
English
Weight
218 KB
Volume
120
Category
Article
ISSN
0026-9247

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✍ Nehal M. Elwan 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 124 KB

## Abstract Reaction of 1‐amino‐3‐arylpyrido[1,2‐__a__]benzimidazole‐2,4‐dicarbonitrile **(1)** with dimethylformamide‐dimethylacetal (DMF‐DMA) gave **1**‐[__N,N__‐(dimethylaminomethylene)amino]‐3‐arylpyrido[1,2‐__a__]benzimidazole‐2,4‐dicarbonitrile **(2).** Compounds **(1)** reacted with triethyl