反应详情

27 g of 3,6-dichloro-pyridazine-4-carboxylic acid were stirred at 50° C. for 6 h in a. 1:1 mixture of concentrated sulphuric acid and water. The pure product crystallized after cooling off the reaction mixture and was filtered.

1. customThe pure product crystallized
2. temperatureafter cooling off the reaction mixture
3. filtrationwas filtered