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A synthesis of triazole-substituted 1-arylquinoxaline derivatives from halogenated 2-nitrosodiarylamines by two routes is presented. Regioselective substitution of fluorine or chlorine in the starting compounds by sodium azide followed by double cyclocondensation of both the azide substituent and the nitrosoamine group leads to functionalized 2-methylenequinoxaline derivatives. The alternative route separates the two cyclocondensation reactions, allowing obtention of triazole-substituted quinoxalin-2-one derivatives by using two different dicarbonyl reagents.

Simple synthesis of 2-alkylidene- and 2-keto-7-triazolylquinoxaline systems from 2-nitrosodiarylamines