反应详情

To a stirred and ice-cooled mixture of 1.09 g (27.4 mmol) NaH (60% in mineral oil) in 20 mL dry DMF was added a solution of 5.00 g (24.9 mmol) 1-(3-bromo-phenyl)-ethanol in 10 mL dry DMF under argon atmosphere. The mixture was stirred for 30 min at 0° C. 1.70 mL (27.4 mmol) methyl iodide was added and stirring was continued for 4 h at RT. The mixture was worked up by adding water, followed by extraction with EtOAc. The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by flash chromatography (Cyc/EtOAc=9/1).

1. temperatureice-cooled
2. stirringThe mixture was stirred for 30 min at 0° C
3. stirringstirring
4. extractionfollowed by extraction with EtOAc
5. dry with materialThe combined organic phases were dried over sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe crude material was purified by flash chromatography (Cyc/EtOAc=9/1)