Butyric Acid → HCID 56597053, compound

Participants

Reaction Steps

1-chloroethyl 7-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-2-oxo-3,4-dihydroquinoline-1(2H)-carboxylate (2.0 g, 3.60 mmol) was stirred with butyric acid (1.0 mL, 10.81 mmol) and ethyldiisopropylamine (0.94 mL, 5.41 mmol) at 50° C. for 48 hours. The reaction was diluted with diethyl ether (20 mL) and quenched with aqueous saturated NaHCO3 (40 mL). The reaction was extracted with ethyl acetate (2×50 mL) and the combined organics were washed with water (50 mL), brine (50 mL) then dried (MgSO4). The crude product was purified by column chromatography on silica eluting with 0.5% Et3N/ethyl acetate to give 1-(butyryloxy)ethyl 7-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-2-oxo-3,4-dihydroquinoline-1(2H)-carboxylate, Compound-90 (628 mg, 23% over 2 steps).

Provenance & Evidence