反应详情

To a solution of 4-bromo-N-(3-iodo-phenyl)-butyramide (1.60 g, 4.36 mmol) in dry DMF (20 mL) at 0° C. was added portionwise sodium hydride (60% in oil, 0.20 g, 5.01 mmol). After 15 min at 0° C., the reaction mixture was then stirred at room temperature overnight. As the reaction was incomplete as judged by TLC, sodium hydride (60% in oil, 45 nmg, 1.09 mmol) was added. After two hours, water (40 mL) and an aqueous solution of saturated ammonium chloride (40 mL) were added to the reaction mixture. The aqueous phase was extractred with EtOAc and then the organic extracts were washed with brine, dried (Na2SO4), filtered, concentrated under vacuum. The crude residue was purified on a silica gel column chromatography using a gradient of EtOAc (0-30%) in cyclohexane to yield the title compound as a yellow solid (0.94 g, 75%).

1. additionwas added
2. waitAfter two hours
3. washthe organic extracts were washed with brine
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated under vacuum
7. customThe crude residue was purified on a silica gel column chromatography