2-溴-4,5-甲氧基苯乙酸 、
草酰氯 、
3-(p-Hydroxy-phenyl)-Δ2-pyrazolin 在
2-(2-bromo-4,5-dimethoxy-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone 作用下,
以to give final compound 2-(2-bromo-4,5-dimethoxy-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (54)的产率得到2-(2-bromo-4,5-dimethoxy-phenyl)-1-[3-(4-hydroxy-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone