反应详情

A flask with stirbar was charged with 2-bromo-3-methyl-4-nitrophenol (Parkway Scientific, 1.15 g, 4.96 mmol), (bromomethyl)cyclopropane (0.60 mL, 6.19 mmol) and cesium carbonate (2.65 g, 8.13 mmol) in dimethylformamide (16 mL). The mixture was stirred overnight at ambient temperature. The mixture was then heated to 50° C. in an oil bath. After 3 hours, the mixture was cooled and shaken in a separatory funnel with 100 mL each of ethyl acetate and saturated aqueous sodium chloride. The organics were washed twice with saturated aqueous sodium chloride, dried over sodium sulfate, filtered, and concentrated. The crude product was purified by flash chromatography (silica gel, 0-30% ethyl acetate in hexanes) to provide 1.24 g (87%) of the title compound

1. temperatureThe mixture was then heated to 50° C. in an oil bath
2. waitAfter 3 hours
3. temperaturethe mixture was cooled
4. washThe organics were washed twice with saturated aqueous sodium chloride
5. dry with materialdried over sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated
8. customThe crude product was purified by flash chromatography (silica gel, 0-30% ethyl acetate in hexanes)