Polycyclic N-Heterocyclic Compounds. Part 54. Ring-cleavages and Ring-closures of N-(Benzo[h]quinazolin-4-yl)amidine and its Amide Oxime Derivatives with Hydroxylamine

The synthesis of abnormal cyclization products, 2-(3-alkyl(or aryl)[1,2,4] oxadiazol-5-yl)-3,4-dihydro-1-naphthylaminoformaldehyde oximes and their homologues, by the reaction of N-(benzo[h]quinazolin-4-yl)amidine or its amide oxime derivatives with excess NH2OH . HCl are described.