Sodium Hydroxide → 4-(3-(7-methoxy-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(phenylthio)ethyl)piperidine-4-carboxylic acid

Participants

Reaction Steps

To 1.5 mL of an ethanol solution containing 90 mg of ethyl 4-(3-(7-methoxy-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(phenylthio)ethyl)piperidine-4-carboxylate, 0.5 mL of 20% aqueous sodium hydroxide solution was added and refluxed with heating for 3 hours and 10 min. After the reaction mixture was cooled to room temperature, the solvent was removed under reduced pressure, water was added, and adjusted to pH 6.5 with 6.0 mol/L hydrochloric acid. The resulting solid was filtered to give 25 mg of 4-(3-(7-methoxy-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(phenylthio)ethyl)piperidine-4-carboxylic acid as a pale yellow solid.

Provenance & Evidence