反应详情

6-bromopyrazolo[1,5-a]pyridin-4-ol (10.0 mg, 0.047 mmol), 3-(bromomethyl)pyridine hydrobromide (14.2 mg, 0.056 mmol), and NaH (6.7 mg, 0.168 mmol, 60 wt %) were suspended in DMF (1 ml) and stirred for 1 h. The reaction mixture was quenched by the addition of saturated aqueous ammonium chloride. The reaction mixture was diluted in ethyl acetate, then washed with water (5 mL) and brine (5 mL). The combined aqueous layers were extracted with ethyl acetate (2×10 mL), and the combined organic layers were dried over magnesium sulfate, filtered and concentrated. The residue was purified by column chromatography on silica gel (methanol/ethyl acetate gradient) to afford 6-(1-methyl-1H-pyrazol-4-yl)-4-(pyridin-3-ylmethoxy)pyrazolo[1,5-a]pyridine.

1. customThe reaction mixture was quenched by the addition of saturated aqueous ammonium chloride
2. additionThe reaction mixture was diluted in ethyl acetate
3. washwashed with water (5 mL) and brine (5 mL)
4. extractionThe combined aqueous layers were extracted with ethyl acetate (2×10 mL)
5. dry with materialthe combined organic layers were dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated
8. customThe residue was purified by column chromatography on silica gel (methanol/ethyl acetate gradient)