反应详情

A mixture of 6-chloro-3-propyl-1-[[2'-(N-trityltetrazol-5-yl)biphenyl-4-yl]methyl]pyrimidine-2,4(1H,3H)-dione (0.5 g), pentylmercaptan (0.12 ml) and potassium carbonate (0.13 g) in acetonitrile (10 ml) was heated under reflux for 4 hours with stirring. The reaction mixture was allowed to cool and the precipitate was removed by filtration. The filtrate was concentrated to dryness. The resulting residue was dissolved in methanol (15 ml) and then 1N hydrochloric acid (1.5 ml) was added to the solution, followed by stirring at room temperature for 2 hours. The reaction mixture was concentrated to dryness and then the residue was extracted with methylene chloride-water. The organic layer was washed with water, dried, and evaporated to dryness. The resulting residue was purified by column chromatography on silica gel to give colorless amorphous powders (0.16 g, 43%).

1. temperaturewas heated
2. temperatureunder reflux for 4 hours
3. temperatureto cool
4. customthe precipitate was removed by filtration
5. concentrationThe filtrate was concentrated to dryness
6. dissolutionThe resulting residue was dissolved in methanol (15 ml)
7. addition1N hydrochloric acid (1.5 ml) was added to the solution
8. stirringby stirring at room temperature for 2 hours
9. concentrationThe reaction mixture was concentrated to dryness
10. extractionthe residue was extracted with methylene chloride-water
11. washThe organic layer was washed with water
12. customdried
13. customevaporated to dryness
14. customThe resulting residue was purified by column chromatography on silica gel