Aniline → HCID 178469510, compound

Participants

Reaction Conditions

Reaction Steps

Diethyl ethoxymethylenemalonate (115 g) was dropwise added to aniline (50 g), and the mixture was refluxed for 1 hr. The resulting ethanol was evaporated under atmospheric pressure, and the residue was heated at 200° C. and poured into diphenyl ether (750 mL). The mixture was stirred at 220–250° C. for 2 hr with heating. The resulting ethanol was again evaporated under atmospheric pressure, and the reaction mixture was allowed to cool to room temperature. The precipitated solid was collected by filtration and washed with hexane to give ethyl 4-hydroxyquinoline-3-carboxylate (51.0 g) as a white powder.

Provenance & Evidence