反应详情

4-[4-(5-Chloropentyloxy)phenyl]-4-hydroxy-7-methoxymethyloxy-3-[4-(methoxymethyloxy)phenyl]-2,3-dihydro-4H-benzopyran (167 mg, 0.3 mmol) and sodium iodide (139 mg, 0.9 mmol) were dissolved in methyl ethyl ketone (5 ml) and then refluxed for 12 hours. The reaction solution was cooled to room temperature and, after adding water, extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, filtered and then concentrated under reduced pressure to remove the organic solvent. The concentrate was subjected to column chromatography (n-hexane:ethyl acetate=4:1) to obtain 142 mg (yield: 75%) of the title compound as a colorless oil.

1. temperaturerefluxed for 12 hours
2. extractionextracted with ethyl acetate
3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customto remove the organic solvent