Abstract
Transformations of some heterocyclic cyanoamino compounds leading to various heterocyclic systems are described.s-Triazolo (1,5-α)azines are obtained either in a direct synthetic approach or via the substituted aminotetrazoles, substituted 3-amino-5-oxo-1,2,4-oxadiazolines, and fromN-ethoxycarbonylN′-heteroaryl thioureas orN-heteroarylN′-hydroxyguanidine. The cyanoamino group reacts also witho-difunctional benzenes to give the corresponding substituted derivatives of benzimidazole, benzoxazole or benzothiazole.
Zusammenfassung
Umwandlungen von einigen heterocyclischen Cyanoamino-Verbindungen in verschiedene heterocyclische Systeme werden beschrieben.s-Triazolo-(1,5-a)azine konnten in einem direkten Syntheseschritt oder über die substituierten Aminotetrazole, substituierten 3-Amino-5-oxo-1,2,4-oxadiazoline und ausN-Ethoxycarbonyl-N′-Heteroaryl-Thioharnstoffen oderN-Heteroaryl-N′-Hydroxyguanidin erhalten werden. Die Cyanoamino-Gruppe reagiert auch mit einigeno-disubstituierten Benzolderivaten; es wurden damit Derivate von Benzimidazol, Benzoxazol oder Benzothiazol dargestellt.
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Verček, B., Ogorevc, B., Stanovnik, B. et al. Cyanoamino compounds in synthesis syntheses of some heterocycles. Monatsh Chem 114, 789–798 (1983). https://doi.org/10.1007/BF01134190
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DOI: https://doi.org/10.1007/BF01134190