反应详情

To a solution of 4′-hydroxypropiophenone (1.0 g, 6.67 mmol) in acetonitrile (50.0 mL) was added potassium carbonate (7.17 g, 66.7 mmol) and the mixture heated to reflux for 90 min. After this time the reaction mixture was allowed to cool to room temperature and dimethyl sulphate (1.05 mL, 11.1 mmol) was added and the reaction mixture was heated to reflux for a further 19 h. After cooling the acetonitrile was evaporated under reduced pressure and the residue taken up in water and extracted with dichloromethane. The dichloromethane extract was dried (MgSO4) and evaporated under reduced pressure to give 4′-methoxypropiophenone as a yellow oil, (970 mg, 89%) 1H nmr (d6-DMSO, 300 MHz) 1.06, t (7.2 Hz), CH3; 2.95, q (7.2 Hz), CH2; 3.83, s, OMe; 7.02, d (6.9 Hz), H3′,5′; 7.93, d (6.9 Hz), H2′,6′. ESI (+ve) MS m/z 165 (M+H, 100%).

1. temperaturethe mixture heated
2. temperatureto reflux for 90 min
3. temperaturethe reaction mixture was heated
4. temperatureto reflux for a further 19 h
5. customwas evaporated under reduced pressure
6. extractionextracted with dichloromethane
7. extractionThe dichloromethane extract
8. dry with materialwas dried (MgSO4)
9. customevaporated under reduced pressure