2,4-二氯-5-氟苯乙酸 、
草酰氯 、
3-(p-Hydroxy-phenyl)-Δ2-pyrazolin 在
2-(2,4-dichloro-5-fluoro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone 作用下,
以to give final compound 2-(2,4-dichloro-5-fluoro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (52)的产率得到2-(2,4-dichloro-5-fluoro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone