反应详情

1-Bromo-4-(ethylthio)benzene (16.0 g) in THF (80 ml) was added dropwise to magnesium (1.82 g) to maintain gentle reflux. The resulting cloudy solution was cooled to 0° and ethylene oxide (6.6 g) in THF (10 ml) was added dropwise. The mixture was stirred at room temperature for 30 min and at reflux for 1 h. Saturated aqueous ammonium chloride (200 ml) was added and the mixture was extracted with ER (2×200 ml). The dried extracted was evaporated and the residue was purified by [C] eluting with cyclohexane-ER (7.3) to give the title alcohol (2.15 g). T.l.c. (cyclohexane-ER 1:1) Rf 0.4.

1. temperatureto maintain gentle reflux
2. temperatureThe resulting cloudy solution was cooled to 0°
3. temperatureat reflux for 1 h
4. extractionthe mixture was extracted with ER (2×200 ml)
5. extractionThe dried extracted
6. customwas evaporated
7. customthe residue was purified by [C]
8. washeluting with cyclohexane-ER (7.3)