反应详情

6-Chloro-N-{3-methyl-4-[(6-methylpyridin-3-yl)oxy]phenyl}-5-nitropyrimidin-4-amine hydrochloride (2.04 g) was suspended in diethyl ether (9.45 mL) and a solution of tin(IV) chloride dihydrate (9.1 g) in conc. hydrochloric acid (20.17 mL) was added under ice-cooling. After stirring at room temperature for 3 hrs, the reaction mixture was poured into ice water (400 mL). A 50% aqueous sodium hydroxide solution (18 mL) was added dropwise to adjust pH to 8. Ethyl acetate (300 mL) was added and the mixture was filtered through celite. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure to give the title compound (1.30 g).

1. temperaturecooling
2. filtrationthe mixture was filtered through celite
3. dry with materialThe organic layer was dried over magnesium sulfate
4. concentrationconcentrated under reduced pressure