4-hydroxy-6-(2-phenylethyl)pyridazin-3(2H)-one 、
3,4-bis(Benzyloxy)-6-[(E)-2-[3-fluoro-4-(trifluoromethyl)-phenyl]ethenyl]pyridazine 在
乙腈 、
水 作用下,
以to yield 6-{2-[3-fluoro-4-(trifluoromethyl)phenyl]ethyl}-4-hydroxy-2,3-dihydropyridazin-3-one in 60% yield的产率得到6-{2-[3-fluoro-4-(trifluoromethyl)phenyl]ethyl}-4-hydroxy-2,3-dihydropyridazin-3-one