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Synthesis 1992; 1992(12): 1206-1208
DOI: 10.1055/s-1992-26335
short paper
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v-Triazolines; 33.1 Synthesis of 3-Aminoquinoxaline 1-Oxides and 2-Aminopyrido[3,4-b]-pyrazine 4-Oxides

Maurizio Battistini* , Emanuela Erba, Donato Pocar
  • *Istituto di Chimica Organica, Facoltà di Farmacia, Università di Milano, Via Venezian 21, I-20133 Milano, Italy
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Publication Date:
29 April 2002 (online)

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N 1,N 1-Disubstituted N 2-(2-nitrophenyl)- and N 2-(2-nitropyridyl)-phenylacetamidines, derived from the thermal rearrangement of 5-amino-4, 5-dihydro-1-(2-nitroaryl)-4-phenyl-1H-1,2,3-triazoles, are obtained in a one-pot reaction from phenylacetaldehyde, a secondary amine and an aryl azide and undergo ring closure to the title compounds on reaction with sodium ethoxide in ethanol.