Potassium Carbonate → HCID 57516327, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2,6-dichloro-5-fluoro-nicotinic acid methyl ester (1.00 g 4.46 mmol), trimethylboroxin (0.620 mL, 4.40 mmol), tetrakis(triphenylphosphine)palladium (0.500 g, 0.433 mmol) and potassium carbonate (1.50 g, 12.0 mmol) is heated at 110° C. overnight. The mixture is cooled to room temperature, diluted with water, and extracted with EtOAc. The combined organic phase is washed with water followed by brine, then dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue is purified by flash silica gel chromatography using a gradient of 0-30% EtOAc/heptane to provide 0.410 g (45.1%) of 2-chloro-5-fluoro-6-methyl-nicotinic acid methyl ester as a solid.

Provenance & Evidence