Sodium Carbonate → HCID 18694306, compound

Participants

Reaction Steps

4-Bromo-3-methylaniline (7.40 g, 40 mmol) and 4-carboxybenzeneboronic acid (7.90 g, 48 mmol) were stirred in 1,2-dimethyoxyethane (DME) (150 ml). Anhydrous sodium carbonate (19.0 g, 179 mmol) was dissolved in water (150 ml) and added to the above. The mixture was then purged with a stream of argon for 15 minutes. Tetrakis (triphenylphosphine)palladium (O) (0.25 g, 0.2 mmol) was added, and the mixture was stirred at reflux for 20 h under argon. DME was removed by evaporation under reduced pressure, and the clear residue was acidified with 5M HCl to yield a thick grey suspension. The solid was filtered off, washed with water and dried in vacuo at 60° C., to give the title compound (9.60 g, quantitative).

Provenance & Evidence