反应详情

Under argon atmosphere, to a solution of 5-[3-chloro-5-(2,2,2-trifluoro-1,1-dimethylethoxymethyl)phenyl]-1-phenyl-1H-pyrazol-3-ylamine (62 mg) in N,N-dimethylacetamide (1 ml) were sequentially added (S)-5-oxopyrrolidine-3-carboxylic acid (26 mg) prepared according to the same procedures as Preparation 14, WSC.HCl (40 mg) at room temperature, and the mixture was stirred for 1 hour. To this reaction mixture was added water, and the mixture was extracted with ethyl acetate. This organic layer was washed with a saturated aqueous solution of sodium chloride, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was purified by silica gel thin-layer chromatography (eluent: chloroform/methanol=9/1). To the resulting solid were added water and a small amount of methanol, and the mixture was stirred. A solid was collected from this suspension by filtration, and was dried under reduced pressure to give the titled compound (35 mg).

1. customprepared
2. extractionthe mixture was extracted with ethyl acetate
3. washThis organic layer was washed with a saturated aqueous solution of sodium chloride
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe resulting residue was purified by silica gel thin-layer chromatography (eluent: chloroform/methanol=9/1)
7. additionTo the resulting solid were added water
8. stirringa small amount of methanol, and the mixture was stirred
9. filtrationA solid was collected from this suspension by filtration
10. customwas dried under reduced pressure