Hydrochloric Acid → HCID 70497760, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred mixture solution of 4,4-dimethyl-2-[3-(4-methyl-piperazin-1-yl)-phenyl]-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid methyl ester (200 mg, 0.5 mmol) in methanol (10 mL) and tetrahydrofuran (10 mL) was added 30% sodium hydroxide in water (1.5 mL). The reaction mixture was stirred at 60° C. for 6 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 4,4-dimethyl-2-[3-(4-methyl-piperazin-1-yl)-phenyl]-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid (180 mg, 95%) as a light white solid which was used for next step without further purification: MS (ESI) M+1=380.2.

Provenance & Evidence