6-(2,4-difluorophenyl)-2-isobutyl-4-phthalimidomethyl-2H-pyridazin-3-one 、
4-carboxy-2-(4-chlorocinnamyl)-6-(3-fluoro-4-methoxyphenyl)-2H-pyridazin-3-one 以to yield the title compound as pale yellow crystals (yield: 17.0%)的产率得到2-(4-chlorocinnamyl)-6-(3-fluoro-4-methoxyphenyl)-4-hydroxymethyl-2H-pyridazin-3-one