Oxalic Acid → 6-(4-oxo-4H-pyridin-1-yl)-1,4-dihydroquinoxaline-2,3-dione

참여 물질

반응 단계

First, 4.849 g of 4-(4-oxo-4H-pyridin-1-yl)-1,2-phenylenediamine and 2.402 g of oxalic acid were added to 60 ml of 4N hydrochloric acid. The mixture was refluxed by heating for 2.5 hours in a nitrogen atmosphere. After the mixture was cooled, precipitated crystals were filtered and recrystallized with dimethylformamide to give 4.786 g of 6-(4-oxo-4H-pyridin-1-yl)-1,4-dihydroquinoxaline-2,3-dione.

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