Potassium Carbonate → 4-Chloro-5,7-difluoro-3-methyl-2-(4-pyridinyl)quinoline

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 2,4-dichloro-5,7-difluoro-3-methylquinoline (1.0 g, 4.03 mmol) in toluene (8.06 mL) was added pyridin-4-ylboronic acid (0.743 g, 6.05 mmol), potassium carbonate (1.11 g, 8.06 mmol) and palladium tetrakistriphenylphosphine (0.466 g, 0.403 mmol). The reaction was stirred at 100° C. and stirring continued for 15 h. The reaction mixture was cooled to rt and concentrated in vacuo. The crude material was purified by column chromatography on silica gel, eluting with (0-50% EtOAc in hexanes) to provide 4-chloro-5,7-difluoro-3-methyl-2-(4-pyridinyl)quinoline as a white solid. Mass Spectrum (ESI) m/e=291.1 (M+1).

Provenance & Evidence