343362-46-9Relevant articles and documents
Synthesis of Polyazaheterocycles by Michael Addition of CH Acids to α,β-Unsaturated Nitriles. Synthesis of Pyridobenzimidazole and Pyrimidopyridobenzimidazole Derivatives
Bogdanowicz-Szwed, Krystyna,Czarny, Agnieszka
, p. 279 - 282 (2007/10/02)
Addition of 1H-benzimidazole-2-carbonitrile (1) to arylidenemalononitrile (2) gave 1-amino-3-aryl pyridobenzimidazole-2,4-dicarbonitrile (3), 2-aryl-benzimidazole (4) and 1H-benzimidazole-2-acetonitrile, α-(arylmethylene) (5).Compounds (3) reacted with formamide yielding 4-amino-5-aryl pyrimidopyridobenzimidazole (6).