反应详情

Combine 4-bromo-1-(dibromomethyl)-2-(trifluoromethyl)benzene (6.66 g, 16.8 mmol), silver nitrate (14.8 g, 87.3 mmol), THF (250 mL), and water (35 mL) in a 500 mL flask equipped with a magnetic stir bar, reflux condenser, and N2 inlet. Reflux the mixture while stirring for 2.5 hours then cool to room temperature. Filter the reaction through Celite®, add ethyl acetate (250 mL) and wash with water (2×200 mL) then saturated aqueous sodium chloride solution (1×200 mL). Dry over anhydrous magnesium sulfate, concentrate to an orange oil, and purify the crude product via silica gel chromatography eluting with hexanes to afford 3.46 g (81%) of the product as a clear oil: 1H NMR (300 MHz, CDCl3) δ 10.35-10.33 (m, 1H), 8.0 (d, 1H, J=8.3 Hz), 7.93 (d, 1H, J=1.4 Hz), 7.86 (dd, 1H, J=1.2 Hz, J=8.3 Hz).

1. temperaturereflux condenser, and N2 inlet
2. temperatureReflux the mixture
3. filtrationFilter
4. customthe reaction through Celite®
5. washwash with water (2×200 mL)
6. dry with materialDry over anhydrous magnesium sulfate
7. concentrationconcentrate to an orange oil
8. custompurify the crude product via silica gel chromatography
9. washeluting with hexanes