6-chloro-8,9-dihydro-7H-cyclopenta[d][1,2,4]triazolo[4,3-b]pyridazin-3-ylamine hydrobromide 、
sodium ethanolate 在
氩 、 silica gel 、 dichloromethane ethanol 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以662 mg of the title compound were obtained的产率得到6-Ethoxy-8,9-dihydro-7H-cyclopenta[d][1,2,4]triazolo[4,3-b]pyridazin-3-ylamine