1-甲基-环丙烷羧酸氯 、
6-(4-氨基苯基)-4,5-二氢-5-甲基-3(2H)-哒嗪酮 在
水 、
dimethylformamide hydrate 作用下,
以
四氢呋喃 为溶剂,
反应 7.0h,
以5.5 g (65% of theory) of 4,5-dihydro-5-methyl-6-[p-(1-methylcyclopropylcarbonylamino)-phenyl]-3(2H)-pyridazinone are obtained as almost colorless crystals, of melting point 235°-237° C.的产率得到4,5-dihydro-5-methyl-6-[p-(1-methylcyclopropylcarbonylamino)-phenyl]-3(2H)-pyridazinone