反应详情

A mixture solution of 2-(5-bromo-2-ethyl-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid methyl ester (1.5 g, 9.1 mmol), morpholine (3.17 mL, 36.4 mmol), copper(I) iodide (1.04 g, 5.5 mmol), N,N-dimethylglycine hydrochloride (1.02 g, 7.3 mmol), and potassium carbonate (3.77 g, 27.3 mmol) in dimethyl sulfoxide (20 mL) was stirred at 120° C. for 12 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 2-(2-ethyl-5-morpholin-4-yl-phenyl)-4,4-dimethyl-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid ethyl ester (0.6 g, 15%) as a white solid: MS (ESI) M+1=423.1.

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