Hydrochloric Acid → HCID 178469469, compound

Participants

Reaction Steps

To a mixture of 2N HCl (50 mL) and ethanol (200 mL), ethyl 4-hydroxy-6-oxo-5,6,7,8-tetrahydroquinoline-3-carboxylate ethylene ketal (10.0 g) is added. Resultant suspension is stirred at room temperature for 24 hours under nitrogen atmosphere. The reaction mixture is neutralized with NaOH and concentrated to remove most of ethanol. The resulting precipitate is collected, washed with water, air dried, then dried in a vacuum oven at 80° to yield ethyl 4-hydroxy-6-oxo-5,6,7,8-tetrahydroquinoline-3-carboxylate.

Provenance & Evidence