Phosphorus oxychloride → HCID 18760041, compound

Participants

Reaction Steps

6-(4-Methoxyphenyl)-5-phenyl-2H-pyridazin-3-one [WO 9925697] (2.76 g, 9.60 mmol) and phosphorus oxychloride (2.8 mP) were stirred at 90° C. for 5 hours in benzene. The reaction mixture was processed in a similar manner as in Example 22, whereby the title compound was obtained as a pale yellow-brown oil (1.83 g, 64.3%)

Provenance & Evidence