反应详情

Potassium fluoride (7.79 g, 134 mmol) and iodomethane (4.98 ml, 80 mmol) were added to a stirred solution of 3-tert-butyldimethylsilyloxy-2,5-difluorobenzaldehyde (19.45 g, 67 mmol) in DMF (100 ml) at room temperature. After 5 hr, the mixture was poured into water (100 ml) and extracted with ethyl acetate (200 ml). The extract was washed with water (100 ml), brine (100 ml), dried (magnesium sulfate) and evaporated. The residue was purified by column chromatography (silica gel) eluting with ethyl acetate/n-hexane (1/10) to give 8.58 g (74%) of the titled compound as a white solid.

1. extractionextracted with ethyl acetate (200 ml)
2. washThe extract was washed with water (100 ml), brine (100 ml)
3. dry with materialdried (magnesium sulfate)
4. customevaporated
5. customThe residue was purified by column chromatography (silica gel)
6. washeluting with ethyl acetate/n-hexane (1/10)