反应详情

5-Bromo-2-chloropyridin-3-amine (1 g, 4.82 mmol) was dissolved in THF (5.5 ml) and a solution of sodium bis(trimethylsilyl)amide (1M in THF, 14.5 ml, 14.5 mmol) was added dropwise. Ten minutes later, 4-methoxybenzene-1-sulfonyl chloride (3 g, 14.5 mmol) was added and the reaction mixture stirred for 2 h. A saturated solution of sodium bicarbonate was then added dropwise and the reaction mixture extracted with dichloromethane (×3). The organic phase was dried over magnesium sulphate, filtered and the solvent evaporated under reduced pressure. The resulting crude was purified by flash chromatography using SP1® Purification System (0% to 10%, dichloromethane-ethyl acetate) to obtain 1.49 g (82% yield) of the title compound. Purity: 100%

1. extractionthe reaction mixture extracted with dichloromethane (×3)
2. dry with materialThe organic phase was dried over magnesium sulphate
3. filtrationfiltered
4. customthe solvent evaporated under reduced pressure
5. customThe resulting crude was purified by flash chromatography
6. customSP1® Purification System (0% to 10%, dichloromethane-ethyl acetate)