Ethyl Acetate → N-(4'-trifluoromethoxybiphenyl-2-yl)-3-methyl-pyrazine-2-carboxamide

Participants

Reaction Steps

A solution of sodium carbonate (0.31 g: 1.5 mmole) in 5 mL of water was added to a solution of N-(2-bromophenyl)-3-methylpyrazine-2-carboxamide (0.4 g: 1.4 mmole) and 4-trifluoromethoxyphenyl boric acid (0.31 g: 1.5 mmole) in 10 mL of toluene, followed by addition of tetrakis(triphenyl-Phosphine)palladium (0) (0.1 g: 0.09 mmole). After heating under reflux condition for 6 hours under argon atmosphere, the reaction mixture was cooled to room temperature, and admixed with ethyl acetate and water, followed by separation. The organic layer was washed with water and saturated brine successively, dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by silica gel column chromatography to give the subject compound (0.35 g).

Provenance & Evidence