反应详情

Under a nitrogen atmosphere, a solution of N4-[2-(benzyloxy)ethyl]-6-methyl-2-phenoxypyridine-3,4-diamine (3.80 g, 10.9 mmol), anhydrous dichloromethane (75 mL), and anhydrous triethylamine (1.8 mL, 13 mmol) was cooled to 5° C. Ethoxyacetyl chloride (1.40 g, 11.4 mmol) was then added over a period of 30 seconds, and the reaction was stirred for 20 minutes. The reaction mixture was washed with aqueous sodium bicarbonate (3×), and the combined aqueous washings were extracted with chloroform (3×). The combined organic solutions were dried over sodium sulfate, filtered, and concentrated under reduced pressure to provide a white powder. The powder was dried for three days under vacuum at room temperature to provide 4.01 g of N-{4-[2-(benzyloxy)ethylamino]-6-methyl-2-phenoxypyridin-3-yl}-2-ethoxyacetamide as a white solid.

1. washThe reaction mixture was washed with aqueous sodium bicarbonate (3×)
2. extractionthe combined aqueous washings were extracted with chloroform (3×)
3. dry with materialThe combined organic solutions were dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customto provide a white powder
7. customThe powder was dried for three days under vacuum at room temperature