反应详情

To a solution of 7-hydroxy-2-methyl-2-phenylthiazolo[3,2-a]indol-3(2H)-one (2.86 g), n-hexyl bromide (1.76 g) and a small amount of potassium iodide, and the mixture was heated and refluxed for 33 hours. The reaction mixture was allowed to cool. Then insoluble matter was filtered. The solvent was evaporated off under reduced pressure. Water was added to the residue, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and a saturated aqueous sodium chloride solution, and was dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (diluting solvent: n-hexane/ethyl acetate=9:1) to give 3.4 g (yield: 93%) of 7-hexyloxy-2-methyl-2-phenylthiazolo[3,2-a]indol-3-(2H)-one.

1. temperaturerefluxed for 33 hours
2. temperatureto cool
3. filtrationThen insoluble matter was filtered
4. customThe solvent was evaporated off under reduced pressure
5. additionWater was added to the residue
6. extractionthe mixture was extracted with ethyl acetate
7. washThe organic layer was washed with water
8. dry with materiala saturated aqueous sodium chloride solution, and was dried over anhydrous sodium sulfate
9. customThe solvent was evaporated under reduced pressure
10. customThe residue was purified by silica gel column chromatography (diluting solvent: n-hexane/ethyl acetate=9:1)