Pyridine → HCID 68473258, compound

Participants

Reaction Steps

2.0 g (9.2 mmol) of ethyl 2-oxo-1,2-dihydroquinoxaline-3-carboxylate was dissolved in dichloromethane (100 mL), and 2.8 g (1.8 mmol) of 3-methoxyphenylboric acid, 3.3 g (1.8 mmol) of anhydrous copper (II) acetate and 1.4 g (1.8 mmol) of pyridine were added thereto. The mixture was stirred for 72 hours at room temperature. After completion of the reaction, the inorganic matter was separated by filtration, and then the solvent was distilled off under reduced pressure. The residue thus obtained was purified by column chromatography (developing solvent: ethyl acetate:hexane=1:1), to obtain 1.2 g (yield: 42%) of ethyl 1-(3-methoxyphenyl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylate as a white powder.

Provenance & Evidence