Potassium Carbonate → HCID 89837014, compound

Participants

Reaction Conditions

Reaction Steps

A sealed tube was charged with 1-[4-(5,5-dimethyl-1,3,2-dioxaborinan-2-yl)-2-methoxyphenyl]cyclobutanol (50 mg, 0.17 mmol), 5-bromo-6-chloro-1H-indazole-3-carboxylic acid (47.4 mg, 0.172 mmol), toluene (0.80 mL), THF (0.40 mL), EtOH (0.40 mL), and 2 M potassium carbonate (0.40 mL, 0.80 mmol). Nitrogen was then bubbled through the mixture for 5 minutes. [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (14.6 mg, 0.017 mmol) was added and the tube sealed and heated to 115° C. for 2 hours. The reaction was cooled to room temperature, opened, neutralized with 1 M NaHSO4, and diluted with ethyl acetate. The layers were separated and the aqueous layer was extracted with ethyl acetate (×2). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo to provide the crude material (80 mg). 40 mg was dissolved in DMSO and subjected to reverse phase chromatography to provide 8 mg (10% yield) of title compound.

Provenance & Evidence