932-22-9,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.932-22-9,4,5-Dichloro-3(2H)-pyridazinone,as a common compound, the synthetic route is as follows.
A mixture of 4,5-dichloropyridazinone (5.0 g, 30 mmol) and water (30 mL) was heated with bromine (1.9 mL, 36 mmol) at 180 0C for 30 min in a microwave oven. Upon cooling the mixture was diluted with water (50 mL) and the solid was collected by filtration and washed with water (10 mL) to give the title compound as an off- white solid (6.75 g) after drying.
As the paragraph descriping shows that 932-22-9 is playing an increasingly important role.
Reference£º
Patent; E. I. DU PONT DE NEMOURS AND COMPANY; WO2009/86041; (2009); A1;,
Pyridazine – Wikipedia
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