Potassium Phosphate, Tribasic → 2'-Fluoro-2-formyl-5'-methoxy-biphenyl-4-carboxylic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To a round bottle flask, was added methyl 3-formyl-4-(trifluoromethylsulfonyloxy)benzoate (6300 mg, 20 mmol), 2-fluoro-5-methoxyphenylboronic acid (10 g, 61 mmol), potassium phosphate tribasic (6.6 mL, 81 mmol) (granular) and tetrakis(triphenylphosphine)palladium (2.3 g, 2.0 mmol). The flask was flushed with nitrogen and then 40 mL of DME was added. The resulting mixture was then heated at 90° C. for 6 hours. The reaction mixture was diluted with EtOAc and water. The organic phase was washed with water and brine and then dried over anhydrous sodium sulfate. After filtration, the organic solvent was removed in vacuo to give a residue which was purified by CombiFlash® chromatography to give a yellow solid (5.80 g, 100%). MS ESI m/e: 289.2 (M+H)+.

Provenance & Evidence