Oxalyl chloride → HCID 68473387, compound

Participants

Reaction Steps

23.3 g of 1-(6-methyl-2-pyridyl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylic acid was dissolved in chloroform (100 mL), and 21.0 g of oxalyl chloride was added thereto. The mixture was stirred for one hour at room temperature. The solvent was distilled off under reduced pressure, and the residue was dissolved in 100 mL of chloroform. 10.2 g of 1,3-cyclohexadione and 10.1 g of triethylamine were added, and the mixture was stirred for 2 hours at room temperature. The reaction mixture was poured into water, and extracted with chloroform. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure, to obtain 28.8 g of 3-oxo-1-cyclohexenyl 1-(6-methyl-2-pyridyl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylate.

Provenance & Evidence