ethyl 3-(3-methyl-1-oxobutyl)-1-(naphthalenylmethyl)-1H-pyrazole-4-carboxylate 、
甲基肼 在
silica 、 Isohexane ethyl acetate 、 cyclohexane, ethyl acetate 作用下,
以
乙醇 为溶剂,
反应 16.0h,
以to give 2,5-dihydro-5-methyl-7-(2-methylpropyl)-2-(1-naphthalenylmethyl)-4H-pyrazolo[3,4-d]pyridazin-4-one (0.43 g)的产率得到2,5-dihydro-5-methyl-7-(2-methylpropyl)-2-(1-naphtalenylmethyl)-4H-pyrazolo[3,4-d]pyridazin-4-one