Acetic Acid → HCID 178418543, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-chloronicotinic acid (1.6 g, 10.15 mmol) and 4-bromo-2,6-difluoroaniline (3.24 g, 15.58 mmol) in acetic acid (40 ml) was heated overnight at 130° C. under nitrogen atmosphere. The mixture was cooled to room temperature to give a precipitate. The mixture was filtered, and the solid was rinsed with acetic acid to afford 2-hydroxynicotinic acid (side-product). A second solid precipitate when the filtrate was partially concentrated to give another precipitate which corresponds to N-(4-bromo-2,6-difluorophenyl)acetamide (another side-product). Finally the filtrate was concentrated to dryness and 3.14 g of the desired compound was obtained as a solid, containing some acetamide but the mixture was used to perform the next synthetic step.

Provenance & Evidence