2-溴-5-氯苯乙酸 、
草酰氯 、
3-(p-Hydroxy-phenyl)-Δ2-pyrazolin 在
2-(2-bromo-5-chloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone 作用下,
以to give final compound 2-(2-bromo-5-chloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (50)的产率得到2-(2-bromo-5-chloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone