Cyanoamino Compounds in Synthesis Syntheses of Some Heterocycles

Article abstract of DOI:10.1007/BF01134190

Transformations of some heterocyclic cyanoamino compounds leading to various heterocyclic systems are described. s-Triazolo(1,5-a)azines are obtained either in a direct synthetic approach or via the substituted aminotetrazoles, substituted 3-amino-5-oxo-1,2,4-oxadiazolines, and from N-ethoxycarbonyl N'-heteroaryl thioureas or N-heteroaryl N'-hydroxyguanidine.The cyanoamino group reacts also with o-difunctional benzenes to give the corresponding substituted derivatives of benzimidazole, benzoxazole or benzothiazole. - Keywords: Cyclization with N-N bond formation; Heterocyclic compounds; Rearrangements