Hydrochloric Acid → 2-(3-Fluoro-5-pyrrolidin-1-yl-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid

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Reaction Conditions

Reaction Steps

A mixture of 2-(3-fluoro-5-pyrrolidin-1-yl-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (0.18 g, 0.45 mmol), lithium hydroxide hydrate (0.19 g, 4.5 mmol), water (1 mL) in methanol (3 mL) and tetrahydrofuran (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 (2×50 mL), washed with water, dried over anhydrous sodium sulfate and then concentrated in vacuo to afford 2-(3-fluoro-5-pyrrolidin-1-yl-phenyl)-3,3-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid (100 mg, 60%) as a white solid which was used for next step without further purification: LC/MS m/e calcd for C22H25FN2O2 (M+H)+: 369.5, observed: 369.2.

Provenance & Evidence