Ethanol → 4-(3-(7-methoxy-4-methyl-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(2-thienylthio)ethyl)piperidine-4-carboxylic acid

Participants

Reaction Steps

To 1 mL of an ethanol solution containing 0.25 g of ethyl 4-(3-(7-methoxy-4-methyl-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(2-thienylthio)ethyl)piperidine-4-carboxylate, 1 mL of 5 mol/L aqueous sodium hydroxide solution was added and stirred under reflux with heating for 5 hours. 2 mL of water was added, removed ethanol under reduced pressure, adjusted to pH 6.0 with 6 mol/L hydrochloric acid, and the resulting solid was filtered to afford 0.21 g of 4-(3-(7-methoxy-4-methyl-2-oxoquinolin-1(2H)-yl)propyl)-1-(2-(2-thienylthio)ethyl)piperidine-4-carboxylic acid as a pale yellow solid.

Provenance & Evidence