HCID 21948263, compound → HCID 21948257, compound

Participants

Reaction Steps

3-Chloro-6-(2,3-difluorophenyl)pyridazine-4-carboxamide (3.03 g, 11.2 mmol) was stirred in phosphoryl chloride (30 mL) at reflux for 3 hours, cooled, and evaporated to dryness. The residue was dissolved in dichloromethane, washed with saturated sodium hydrogen carbonate solution, dried (MgSO4) and evaporated to give the title compound as a solid.

Provenance & Evidence