Potassium Phosphate, Tribasic → 5,7-difluoro-N-(2'-methoxy-5-morpholino-2,3'-bipyridin-3-yl)-3-methyl-2-(pyridin-2-yl)quinolin-4-amine

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of N-(2-chloro-5-morpholinopyridin-3-yl)-5,7-difluoro-3-methyl-2-(pyridin-2-yl)quinolin-4-amine (50.1 mg, 0.11 mmol), 2-methoxypyridin-3-ylboronic acid (32.9 g, 0.22 mmol), ground 2-dicyclohexylphosphino-2,6-dimethoxybiphenyl, (S-Phos) (9.1 mg, 0.022 mmol), palladium (II) acetate (2.7 mg, 0.012 mmol), and potassium phosphate tribasic (70.5 g, 0.33 mmol) in DMF (1.0 mL) and Water (0.04 mL) was purged 3 times with argon and placed under vacuum 3 times. The reaction mixture was carefully heated to 90° C. After 21 h, the reaction was cooled to rt, then diluted with water and extracted 3 times with EtOAc. The organic extractions were combined and washed twice with brine. After drying over anhydrous sodium sulfate and filtration, the organic solvent was removed under reduced pressure. The residue was purified over basic alumina (0-50% EtOAc in hexanes) to afford an impure yellow film. This film was further purified with HPLC (10-90% of 0.1% TFA acetonitrile solution in 0.1% TFA water solution). The desired fractions were cond then diluted with EtOAc. After washing twice with satd aq. sodium bicarbonate solution and once with brine, the solvent was removed under reduced pressure to yield a solid as 5,7-difluoro-N-(2′-methoxy-5-morpholino-2,3′-bipyridin-3-yl)-3-methyl-2-(pyridin-2-yl)quinolin-4-amine. Mass Spectrum (pos.) m/e: 541.2 (M+1).

Provenance & Evidence