反应详情

A solution of 26.4 g of 6-chloro-3-oxo-2,3-dihydropyridazine-4-carboxylic acid (2-aminophenyl)amide in 500 ml of acetic acid is stirred at 110° C. for 2.5 hours and then the solvent is distilled off. The crude product obtained in this way is employed without further purification.

1. distillationthe solvent is distilled off