Acetonitrile → 2-amino-5-[3-(2-methoxy-phenyl)-1-(2-trimethylsilanylethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-N,N-dimethyl-benzamide

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Reaction Steps

650 mg (1.35 mmol) of 3-(2-methoxy-phenyl)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-b]pyridine, 395 mg (1.62 mmol) 2-amino-5-bromo-N,N-dimethyl-benzamide and 55 mg (67 μmol) of dichloro[1,1′-bis(diphenylphoshino)ferrocene]palladium(II) dichloromethane adduct were placed in a vial. 8 mL of acetonitrile and 8 mL of a saturated aqueous solution of sodium bicarbonate were added. The vial was closed and the mixture irradiated in a Personal Chemistry® Optimizer to 100° C. for 15 min. The crude mixture was distributed between dichloromethane and water. The aqueous layer was extracted three times with dichloromethane. The combined organic phases were dried over sodium sulfate and evaporated. The crude was purified by flash chromatography on silica gel using a gradient of ethyl acetate containing 15% of methanol in hexanes to afford 288 mg (0.45 mmol, 33%) of 2-amino-5-[3-(2-methoxy-phenyl)-1-(2-trimethylsilanylethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-N,N-dimethyl-benzamide as a pale beige solid. MS: m/z 518.1 (M+H+).

Provenance & Evidence