Tetrahydrofuran → propane-1-sulfonic acid{2,4-difluoro-3-[5-(1H-pyrazolo[3,4-b]pyridin-5-yl)-1H-pyrrolo[2,3-b]pyridine-3-carbonyl]-phenyl}-amide

Participants

Reaction Conditions

Reaction Steps

In a microwave vial, propane-1-sulfonic acid {2,4-difluoro-3-[5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine-3-carbonyl]-phenyl}-amide (30, 0.050 g, 0.099 mmol) is combined with 5-bromo-1H-pyrazolo[3,4-b]pyridine (31, 0.030 g, 0.15 mmol), 1 mL of tetrahydrofuran, 1 mL of acetonitrile, tetrakis(triphenylphosphine)palladium(0) (0.050 g, 0.043 mmol), and potassium carbonate (0.400 mL, 1.00 M in water). The reaction is heated at 145° C. for 45 minutes in a microwave, then extracted with ethyl acetate, and the organic layer is washed with water and brine. The organic layer is dried over sodium sulfate, filtered and the filtrate concentrated under vacuum. The resulting material is purified by silica gel column chromatography, eluting with a gradient of methanol:dichloromethane. Appropriate fractions are combined, concentrated under vacuum and the resulting solid is further washed with a mixture of ethyl acetate:hexane to provide the desired compound. MS (ESI) [M−H+]−=495.05.

Provenance & Evidence