反应详情

In an argon atmosphere, diphenylamine (338 mg, 2.00 mmol) and 4-bromobenzyl bromide (500 mg, 2.00 mmol) were dissolved in dimethylformamide (8 mL), and to the solution was added sodium hydride (88 mg, 2.2 mmol) under ice -cooling, followed by stirring at room temperature for 4 hours. To the reaction solution was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, and then dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (14:1 hexane/acetone) to obtain N-(4-bromobenzyl)diphenylamine (478 mg, 71%).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with water and brine
3. dry with materialdried over anhydrous sodium sulfate
4. customThe solvent was evaporated under reduced pressure
5. customthe residue was purified by silica gel column chromatography (14:1 hexane/acetone)