反应详情

To a mixture of 4-amino-2-chlorophenol hydrochloride (446 mg, 2.4 mmol) in DMSO (4 mL) was added NaH (280 mg, 7.0 mmol, 60% dispersed in mineral oil). The reaction was stirred at rt for 30 minutes, followed by the addition of 4-chloropicolinamide (345 mg, 2.2 mmol). The reaction was microwaved at 160° C. for 2 hours, then cooled to rt, and diluted with water (20 mL). The resulted mixture was extracted with ethyl acetate (20 mL×3) and the combined organic phases were washed with brine (20 mL), dried over anhydrous Na2SO4, and concentrated in vacuo. The residue was purified by a silica gel column chromatography (EtOAc/PE (v/v)=1/1) to give the title compound as an orange solid (170 mg, 29%).

1. customThe reaction was microwaved at 160° C. for 2 hours
2. temperaturecooled to rt
3. extractionThe resulted mixture was extracted with ethyl acetate (20 mL×3)
4. washthe combined organic phases were washed with brine (20 mL)
5. dry with materialdried over anhydrous Na2SO4
6. concentrationconcentrated in vacuo
7. customThe residue was purified by a silica gel column chromatography (EtOAc/PE (v/v)=1/1)