3,4-Difluorobenzyl Chloride → 4-carboxy-2-(3,4-difluorobenzyl)-6-(4-fluoro-3-methylphenyl)-2H-pyridazin-3-one

Participants

Reaction Steps

Following the procedure of Example 1(6), 6-(4-fluoro-3-methylphenyl)-4-methoxycarbonyl-2H-pyridazin-3-one and 3,4-difluorobenzyl chloride were reacted to yield a crude product. Without purification, the crude product was reacted further in accordance with the procedure of Example 1(7) to yield the title compound as a pale yellow solid (66.7%).

Provenance & Evidence