反应详情

Sodium hydride (28 mg, 0.723 mmol, 60% dispersion in mineral oil) was added slowly to a solution of 3-chloro-2,4-difluoro-N-(2-hydroxyethyl)-N-methylbenzamide (180 mg, 0.723 mmol) in DMF (4 mL) and the reaction stirred at room temperature for 16 hours. Water was added to the reaction and the mixture was subsequently extracted with DCM (3×30 mL). The combined organic phases were washed with water (5×25 mL) and saturated brine solution then dried (MgSO4), filtered and evaporated to give the desired product as an oil (140 mg). 1H NMR δ (CDCl3): 3.21 (s, 3H), 3.54 (t, 2H), 4.52 (t, 2H), 6.97 (dd, 1H), 7.72 (dd, 1H). m/z 230 (M+H)+

1. extractionthe mixture was subsequently extracted with DCM (3×30 mL)
2. washThe combined organic phases were washed with water (5×25 mL) and saturated brine solution
3. dry with materialthen dried (MgSO4)
4. filtrationfiltered
5. customevaporated