反应详情

温度

65 °C

To a solution of (E)-1-(3,5-dimethyl-4-(2-((4-oxopiperidin-1-yl)sulfonyl)vinyl)phenyl)-5,5-dimethylimidazolidine-2,4-dione (994 mg, 2.37 mmol) in methanol (24 mL), potassium cyanide (188 mg, 2.84 mmol) and ammonium acetate (237 mg, 3.08 mmol) were added at room temperature. The mixture was stirred at 60-70° C. for three hours. The reaction mixture was cooled, concentrated under reduced pressure, and then diluted with ethyl acetate. The organic layer was washed with water and brine, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (dichloromethane-ethyl acetate) to afford (E)-4-amino-1-((4-(5,5-dimethyl-2,4-dioxoimidazolidin-1-yl)-2,6-dimethylstyryl)sulfonyl)piperidine-4-carbonitrile (681 mg, 68%).

1. temperatureThe reaction mixture was cooled
2. concentrationconcentrated under reduced pressure
3. additiondiluted with ethyl acetate
4. washThe organic layer was washed with water and brine
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by silica gel column chromatography (dichloromethane-ethyl acetate)