3-(p-Hydroxy-phenyl)-Δ2-pyrazolin 、
2,4-二氯苯乙酸 在
2-(2,4-dichloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone 作用下,
以to give the final compound 2-(2,4-dichloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (33)的产率得到2-(2,4-dichloro-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone