反应详情

温度

125 °C

Potassium acetate (4 mL, 1M, 4 mmol) was added to a mixture of 4,6-dichloro-1-methyl-1H-pyrazolo[3,4-b]pyridine 5 (0.115 g, 0.569 mmol), 3-cyano-2-fluorophenylboronic acid 14 (0.075 g, 0.455 mmol) in DMF (2 mL) and acetonitrile (2 mL). Nitrogen was bubbled through the mixture followed by the addition of 10 mole % tetrakis(triphenylphosphine) palladium (0) and the reaction was heated at 125° C. in a microwave for 20 minutes. Solvent was removed, and the residue was dissolved in ethyl acetate and washed with saturated sodium bicarbonate solution and brine (15 mL). The organic portions were pooled and dried over anhydrous sodium sulfate and the solvent was removed. The crude material was purified by reverse phase chromatography (Biotage) using ethyl acetate and hexanes as solvents to give 15 as white solid (0.035 g, 20%)

1. customNitrogen was bubbled through the mixture
2. additionfollowed by the addition of 10 mole % tetrakis(triphenylphosphine) palladium (0)
3. customSolvent was removed
4. dissolutionthe residue was dissolved in ethyl acetate
5. washwashed with saturated sodium bicarbonate solution and brine (15 mL)
6. dry with materialdried over anhydrous sodium sulfate
7. customthe solvent was removed
8. customThe crude material was purified by reverse phase chromatography (Biotage)