5-氯-2-(三氟甲基)苯乙酸 、
草酰氯 、
3-(p-Hydroxy-phenyl)-Δ2-pyrazolin 在
2-(5-chloro-2-trifluoromethyl-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone 作用下,
以to give final compound 2-(5-chloro-2-trifluoromethyl-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (51)的产率得到2-(5-chloro-2-trifluoromethyl-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone