反应详情

40% Dimethyl amine in water (2.6 mL, 21 mmol) was added to a solution of 3-bromo-5-nitro-1H-pyrazolo[3,4-b]pyridine (0.063 g, 0.26 mmol) in DMF (6.0 mL), and the mixture was placed in a microwave reactor at 140° C. for 15 hours. The reaction mixture was diluted with ethyl acetate (100 mL), and the organic layer was washed with water (3×50 mL). The organic layers were dried, filtered and concentrated. The crude product was purified by column chromatography, eluting with hexanes/ethyl acetate (4:1) to give N,N-dimethyl-5-nitro-1H-pyrazolo[3,4-b]pyridin-3-amine (0.012 g, 22%) as a solid.

1. washthe organic layer was washed with water (3×50 mL)
2. customThe organic layers were dried
3. filtrationfiltered
4. concentrationconcentrated
5. customThe crude product was purified by column chromatography
6. washeluting with hexanes/ethyl acetate (4:1)