反应详情

To a suspension of 96 mg (2.4 mmol) of 60% sodium hydride (oily) in 15 ml of dimethylformamide, 587 mg (2.0 mmol) of 3-[4-(4-pyridylthio)butyl]-5,5-dimethylhydantoin was added, and the mixture was stirred at room temperature for 10 minutes. To this reaction mixture, 807 mg (4.0 mmol) of 4-(4-chlorobutylthio)pyridine was added with stirring under ice-cooling, and the mixture was stirred at 80° C. for 16 hours. After cooling, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was dried and the-solvent was distilled off. The residue was purified by column chromatography (eluent: ethyl acetate/ethanol=10:1) to give 0.74 g of the desired product (80.7% yield, yellow oil).

1. additionwas added
2. stirringwith stirring under ice-
3. temperaturecooling
4. stirringthe mixture was stirred at 80° C. for 16 hours
5. temperatureAfter cooling
6. extractionthe mixture was extracted with ethyl acetate
7. customThe extract was dried
8. distillationthe-solvent was distilled off
9. customThe residue was purified by column chromatography (eluent: ethyl acetate/ethanol=10:1)