Dichloromethane → 7-methoxy-4-methyl-1-(2-(4-((3-phenylpropyl)amino)piperidin-1-yl)ethyl)quinolin-2(1H)-one

Participants

Reaction Steps

To 2 mL of a dichloromethane solution containing 0.16 g of tert-butyl(1-(2-(7-methoxy-4-methyl-2-oxoquinolin-1(2H)-yl)ethyl)piperidin-4-yl)(3-phenylpropyl)carbamate, 0.5 mL of trifluoroacetic acid was added under ice-cooling and stirred for 1.5 hours, thereafter the mixture was raised to the room temperature and left to stand for one night. The solvent was removed under reduced pressure, and to the residue thus obtained, ethyl acetate and water were added, and adjusted to pH 12.3 with 20% aqueous sodium hydroxide solution. The organic layer was separated, washed with aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure to give 0.11 g of 7-methoxy-4-methyl-1-(2-(4-((3-phenylpropyl)amino)piperidin-1-yl)ethyl)quinolin-2(1H)-one as a yellow oil.

Provenance & Evidence