反应详情

温度

60 °C

A mixture of 3,3-dimethyl-2-(3-methyl-5-morpholin-4-yl-phenyl)-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (0.52 g, 1.3 mmol), lithium hydroxide hydrate (0.54 g, 13 mmol), water (1 mL) in methanol (2 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 an oil residue. 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-methyl-5-morpholin-4-yl-phenyl)-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid (200 mg, 31%) as a white solid: LC/MS m/e calcd for C23H28N2O3 (M+H)+: 381.5, observed: 381.2.

1. extractionextracted with ethyl acetate (2×50 mL)
2. washwashed with water
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated in vacuo
5. customto afford an oil residue
6. customPurification 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)