Potassium Carbonate → HCID 67532034, compound

Participants

Reaction Conditions

Reaction Steps

27.2 g (88 mmol) of ethyl 1-(6-methylpyridine-2-yl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylate was dissolved in 1,4-dioxane (50 ml) and water (50 ml), and 18.3 g (0.13 mol) of potassium carbonate was added thereto, and the solution was stirred for 1 hour at 60° C. The solvent was distilled off under reduced pressure and the aqueous layer was adjusted to pH<4. The precipitated crystals were filtered to obtain 23.3 g (yield: 94%) of 1-(6-methylpyridine-2-yl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylic acid.

Provenance & Evidence