Citric Acid → HCID 178492037, compound

Participants

Reaction Steps

1.78 g (4.5 mmol) of 3-oxo-1-cyclohexenyl 1-(6-methoxy-3-pyridyl)-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate was dissolved in dichloromethane (50 mL), and 0.77 mL (5.5 mmol) of triethylamine and 0.43 g (5.0 mmol) of acetone cyanohydrin were added to the above solution. The resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into an aqueous solution of citric acid, and the mixture was extracted with dichloromethane. The organic phase was washed with water, dried, and concentrated. The residue was purified by column chromatography (ethyl acetate:n-hexane=1:1 to 7:3), and thus 0.37 g (yield: 21%) of the title compound was obtained as orange-colored crystals.

Provenance & Evidence