Water → HCID 66855490, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of Methyl 2-(2-methylpyrazolo[1,5-a]pyridin-3-yl)-4-{[(trifluoromethyl)sulfonyl]oxy}-1,3-thiazole-5-carboxylate (500 mg, 1.2 mmol) obtained in Example 13-B(ii), 2,6-difluorophenylboronic acid (375 mg, 2.4 mmol), [1,1-bis(diphenylphosphino)ferrocene]palladium(II) dichloride dichloromethane complex (97 mg, 0.12 mmol) and cesium carbonate (1.2 g, 3.6 mmol) in DME (20 mL), was added water (1 mL) and the mixture was stirred at 80° C. for 3 h. The reaction mixture was allowed to cool to room temperature, and then water (100 mL) was added. The aqueous mixture was extracted with EtOAc (100 mL×2) and the combined organic layer was dried over anhydrous magnesium sulfate. Insoluble materials were removed by filtration and the filtrate was concentrated. The residue was purified by silica gel column chromatography (EtOAc) to give the title compound (147 mg, 32%) as a yellow solid.

Provenance & Evidence