Tricyclic heteroaromatic systems. 1,2,4-triazolo[1,5-a]quinoxaline |
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Authors: | Daniela Catarzi Lucia Cecchi Vittoria Colotta Guido Filacchioni Fabrizio Melani |
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Abstract: | The parent 1,2,4-triazolo1,5-a]quinoxaline was prepared by a few-step reaction from ethyl N1-(2-nitrophenyl)-N3-ethoxalyloxamidrazonate, which afforded the key intermediate diethyl 1-(2-nitrophenyl)-1,2,4-triazole-3,5-dicarboxylate in satisfactory yield. The latter was cyclized, hydrolyzed, decarboxylated, reduced and dehydrogenated to yield the title compound. |
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