Potassium Carbonate → HCID 86718615, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromo-6-(4-chlorophenyl)pyridin-3-ol (0.319 g, 1.12 mmol), 2-(trifluoromethyl)pyridine-5-boronic acid [purchased from Frontier Scientific] (277.8 mg, 1.46 mmol) and potassium carbonate (386.7 mg, 2.798 mmol) in dimethoxyethane (15 mL) and water (5 mL) was purged with nitrogen for 20 minutes. Tetrakis(triphenylphosphine)palladium(0) (64.7 mg, 0.056 mmol) was added and the reaction mixture heated to 80° C. in a sealed vial for 15 hours. The cooled reaction mixture was partitioned between ethyl acetate (50 mL) and saturated aqueous ammonium chloride solution (50 mL), the organic phase separated, washed with water (50 mL) and saturated brine (50 mL), dried (MgSO4), filtered and concentrated under reduced pressure to give a yellow solid. The crude product was purified by chromatography on silica eluting with a solvent gradient of 0 to 50% ethyl acetate in hexanes to give 6-(4-chlorophenyl)-6′-(trifluoromethyl)-[2,3′-bipyridin]-3-ol (0.234 g, 60% yield) as a cream solid.

Provenance & Evidence