6-(4-fluoro-3-methylphenyl)-4-methoxy-carbonyl-2H-pyridazin-3-one 、
3-(2,6-dichlorophenyl)-1-propanol methanesulfonate 在
crude product 、 6-(2,4-difluorophenyl)-2-isobutyl-4-methanesulfonyloxymethyl-2H-pyridazin-3-one 作用下,
以to yield the title compound as a pale yellow solid (yield: 89.8%)的产率得到4-carboxy-2-[3-(2,6-dichlorophenyl)propyl]-6-(4-fluoro-3-methylphenyl)-2H-pyridazin-3-one