반응 #1124062

반응 방정식

2-(3-bromo-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid methyl ester

2-amino-2-methyl-propionic acid

potassium carbonate

→

2-[3-(1-carboxy-1-methyl-ethylamino)-phenyl]-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid

수율 25.1%

용매

dimethyl sulfoxide

반응 조건

후처리

1. 1
   추출extracted with ethyl acetate (150 mL×2)
2. 2
   세척washed with water (50 mL×2) and saturated aqueous ammonium chloride solution (50 mL×2)
3. 3
   건조dried over anhydrous sodium sulfate
4. 4
   농축concentrated in vacuo
5. 5
   기타Purification 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% ammonium hydroxide in water)

실험 절차

A solution of 2-(3-bromo-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid methyl ester (374 mg, 1.0 mmol), copper(I) iodide (57 mg, 0.3 mmol), 2-amino-2-methyl-propionic acid (309 mg, 3.0 mmol) and potassium carbonate (415 mg, 3.0 mmol) in dimethyl sulfoxide (2.0 mL) was stirred at 120° C. for 16 h. Then the reaction mixture was cooled to room temperature and extracted with ethyl acetate (150 mL×2), washed with water (50 mL×2) and saturated aqueous ammonium chloride solution (50 mL×2), 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% ammonium hydroxide in water) afforded 2-[3-(1-carboxy-1-methyl-ethylamino)-phenyl]-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-8-carboxylic acid (95.3 mg, 25.1%) as a white solid: LC/MS m/e obsd. (ESI+) [(M+H)+] 383.1.

출처