1-ethyl-4-methylpyridinium iodide 、
3a,4-dihydro-3-methyl-4-phenyl-1H-pyrazolo<3,4-d>pyrimidin-6(5H)-one 在
sodium hydroxide 作用下,
以
乙醇 为溶剂,
反应 30.0h,
以53%的产率得到(6E)-6-[(1-ethylpyridin-1-ium-4-yl)methylidene]-3-methyl-4-phenyl-1,3a,4,5-tetrahydropyrazolo[3,4-d]pyrimidine;iodide