Abstract Condensation of aliphatic and aliphatic-aromatic α-diketones, and of substituted benzils with 2, 3-and 3, 4-diaminobenzoic acids and with 4, 5-diamino-2-hydroxybenzoic acid gave 74 5-and 6-quinoxalinecarboxylic acids, with the same or different alkyls and aryls as substituents at position 2 and 3. The compounds with different substituents at positions 2 and 3 were resolved into positional isomers. Their structures were determined by means ...
