反应详情

To a mixture of N2-(3-chlorophenyl)-4-(trifluoromethyl)pyrimidine-2,5-diamine (150 mg), pyridine (84 μL) and dichloromethane (3 mL) was added benzenesulfonylchloride (129 mg) under ice-cooling, followed by stirring at room temperature for 6 hours. To the reaction mixture was added a saturated aqueous sodium hydrogen carbonate solution and the aqueous layer was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate), and the obtained residue was solidified from a mixed solvent of hexane and ethyl acetate to obtain N-{2-[(3-chlorophenyl)amino]-4-(trifluoromethyl)pyrimidin-5-yl}benzenesulfonamide (174 mg) as a white powder.

1. temperaturecooling
2. extractionthe aqueous layer was extracted with ethyl acetate
3. washThe organic layer was washed with water and saturated brine
4. dry with materialdried over anhydrous magnesium sulfate
5. customthe solvent was evaporated under reduced pressure
6. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate)