반응 #2495147

반응 방정식

2-(3-bromo-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid methyl ester

morpholine

N,N-dimethylglycine hydrochloride

potassium carbonate

→

4,4-dimethyl-2-(3-morpholin-4-yl-phenyl)-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid methyl ester

수율 80.0%

용매

dimethyl sulfoxide

반응 조건

후처리

1. 1
   추출The reaction mixture was extracted with ethyl acetate (200 mL×2)
2. 2
   세척washed with saturated aqueous ammonium chloride solution (50 mL×3) and brine (50 mL×2)
3. 3
   건조dried over anhydrous sodium sulfate
4. 4
   농축concentrated in vacuo
5. 5
   기타the residue was purified by ISCO combi-flash chromatography (gradient elution, 30-50% ethyl acetate in petroleum ether)

실험 절차

A mixture solution of 2-(3-bromo-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid methyl ester (11.2 g, 30.0 mmol), morpholine (26.0 mL, 294.0 mmol), copper(I) iodide (3.4 g, 18.0 mmol), N,N-dimethylglycine hydrochloride (3.4 g, 24.0 mmol), and potassium carbonate (12.4 g, 90.0 mmol) in dimethyl sulfoxide (65 mL) was stirred at 120° C. for 16 h. Then the reaction mixture was cooled to room temperature. The reaction mixture was extracted with ethyl acetate (200 mL×2), washed with saturated aqueous ammonium chloride solution (50 mL×3) and brine (50 mL×2), dried over anhydrous sodium sulfate and then concentrated in vacuo and the residue was purified by ISCO combi-flash chromatography (gradient elution, 30-50% ethyl acetate in petroleum ether) to afford 4,4-dimethyl-2-(3-morpholin-4-yl-phenyl)-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid methyl ester (9.1 g, 80%) as a white solid: MS (ESI) M+1=381.0.

출처