反应详情

To a solution of (2-methyl-5-amino-phenyl)-(5-pyridin-3-yl-oxazol-2-yl)-amine (120 mg, 0.451 mmol) and 3-dimethylaminobenzoic acid (86 mg, 0.521 mmol) in DMF (6 mL) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (136 mg, 0.824 mmol), 1-hydroxybenzotriazole (84 mg, 0.622 mmol) and triethylamine (0.98 ml, 0.710 mmol). The mixture was stirred at room temperature for 4 h. After removal of the solvent, the residue was treated with saturated aqueous NaHCO3 (20 mL) and extracted with dichloromethane (3×10 mL). The combined organic layers were washed with brine (20 mL), dried over MgSO4 and concentrated. 3-dimethylamino-N-[4-methyl-3-(5-pyridin-3-yl-oxazol-2-ylamino)-phenyl]-benzamide was obtained after silica gel column chromatography (dichloromethane/ethanol:98/2) (113 mg, 58%) as yellow solid.

1. customAfter removal of the solvent
2. additionthe residue was treated with saturated aqueous NaHCO3 (20 mL)
3. extractionextracted with dichloromethane (3×10 mL)
4. washThe combined organic layers were washed with brine (20 mL)
5. dry with materialdried over MgSO4
6. concentrationconcentrated