Hydrochloric Acid → HCID 53492512, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3,3-dimethyl-2-{3-[(piperidine-1-carbonyl)-amino]-phenyl}-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (870 mg, 2 mmol) in methanol (15 mL) and tetrahydrofuran (20 mL), 30% sodium hydroxide in water (10 mL) was stirred at 60° C. for 12 h. The mixture was neutralized with a 3 N aqueous hydrochloric acid solution and extracted with ethyl acetate (2×100 mL), washed with water, dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by Waters automated flash system (column: Xterra 30 mm×100 mm, sample manager 2767, pump 2525, detector: ZQ mass and UV 2487, solvent system: acetonitrile and 0.1% formic acid in water) afforded 3,3-dimethyl-2-{3-[(piperidine-1-carbonyl)-amino]-phenyl}-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid (365 mg, 44%) as a white solid: LC/MS m/e calcd for C24H29N3O3 (M+H)+: 408.52, observed: 408.2.

Provenance & Evidence