Hydrochloric Acid → HCID 22903583, compound

Participants

Reaction Conditions

Reaction Steps

First, 1.244 g of 7-fluoro-6-nitro-1-(n-propyl)-1,4-dihydroquinoxaline-2,3-dione, 952 mg of 4-hydroxypyridine, and 711 mg of powdered potassium hydroxide were added to 10 ml of dry dimethylsulfoxide. The mixture was stirred at 130° C. for 3.5 hours in a nitrogen atmosphere. Then, 50 ml of water was added to the reaction mixture and the mixture was made acidic (pH 2 to 3) with 4N hydrochloric acid to give a yellow precipitate. The precipitate was filtered and recrystallized with dimethylformaldehyde to give 1.08 g of 6-nitro-7-(4-oxo-4H-pyridin-1-yl)-1-(n-propyl)-1,4-dihydroquinoxaline-2,3-dione.

Provenance & Evidence