Citric Acid → HCID 178516091, compound

Participants

Reaction Steps

2.16 g (6.0 mmol) of 3-oxo-1-cyclohexenyl 1-phenyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate was dissolved in dichloromethane (50 mL), and 1.01 mL (7.2 mmol) of triethylamine and 0.56 g (6.6 mmol) of acetone cyanohydrin were added to the above solution. The resulting mixture was stirred for one whole day and night 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 washed with methanol, and thus 1.01 g (yield: 47%) of the title compound was obtained as pale brown crystals.

Provenance & Evidence