反应详情

温度

90 °C

At 60-70° C., 110 μl (0.46 mmol, 4 eq.) of T3P (50% in ethyl acetate) were added dropwise to a solution of 46 mg (0.13 mmol) of 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]butanoic acid (racemate) and 51 mg (0.27 mmol, 2 eq.) of methyl 4-amino-2,6-difluorobenzoate in 1 ml of pyridine. The reaction mixture was heated to 90° C., stirred at 90° C. for 30 min and cooled to RT, and water and ethyl acetate were added. After phase separation, the aqueous phase was extracted with ethyl acetate. The combined organic phases were washed with saturated aqueous sodium chloride solution, dried (sodium sulphate), filtered and concentrated under reduced pressure. The crude product was purified by normal phase chromatography (mobile phase: cyclohexane/ethyl acetate 10-50% mixtures). Yield: 54 mg (79% of theory)

1. temperaturecooled to RT
2. customAfter phase separation
3. extractionthe aqueous phase was extracted with ethyl acetate
4. washThe combined organic phases were washed with saturated aqueous sodium chloride solution
5. dry with materialdried (sodium sulphate)
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customThe crude product was purified by normal phase chromatography (mobile phase: cyclohexane/ethyl acetate 10-50% mixtures)