反应详情

温度

0 °C

4-Cyclopentylaniline (210 mg, 1.30 mmol) was dissolved in cold (0° C.) DMF (8 mL) and treated with NBS (232 mg, 1.30 mmol). The reaction was stirred at 0° C. for 5 min and then warmed to room temperature for 1 h. The reaction mixture was poured into water (40 mL) and extracted with ethyl acetate (3×20 mL). The combined organic extracts dried over MgSO4, filtered and concentrated in vacuo. Purification by silica gel chromatography (0-50% ethyl acetate/hexanes) yielded 2-bromo-4-cyclopentylaniline (251 mg, 80% yield). LC/MS m/z 242.0 [M+H]+.

1. temperaturewarmed to room temperature for 1 h
2. extractionextracted with ethyl acetate (3×20 mL)
3. dry with materialThe combined organic extracts dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customPurification by silica gel chromatography (0-50% ethyl acetate/hexanes)