Utility of<i>p-</i>phenylenediformamidine in the synthesis of bisazoles and phenanthroline
作者:Saleh M. Al-Mousawi、Abdel-Zaher A. Elassar
DOI:10.1002/jhet.157
日期:2009.9
dimethyl acetal (DMFDMA) by heating or by microwave irradiation. Compound was treated with active methylene nitriles followed by hydrazine hydrate derivatives to give bisaminopyrazole derivatives. Other bisazoles can be obtained by reacting with aminoazole derivatives. Cyclization of Bis [2-(p-phenelyeneimino)malononitrile] to 1,10-diaminophenanthroline-2,9-dicarbonitrile is also reported. J. Heterocyclic
Studies with 2-Arylhydrazononitriles: Further Investigations on the Utility of 2-Arylhydrazononitriles as Precursors to 1,2,3-Triazole Amines
作者:Saleh Mohammed Al-Mousawi、Moustafa Sherief Moustafa、Mohamed Hilmy Elnagdi
DOI:10.3184/030823407x244869
日期:2007.9
3-Oxo-2-arylhydrazonobutanenitriles react with hydroxylamine hydrochloride in ethanolic sodium acetate to yield either amidoximes or isoxazolamines depending on the nature of the substituent. The amidoximes cyclise in refluxing DMF containing piperidine to form 2-aryl-1,2,3-triazol-5-amines. The isoxazolamines rearranged into 1,2,3-triazolamines on refluxing in DMF. Amidoxime 2c cyclised in acetic