3-氨基-1-苯基-2-吡唑啉-5-酮 、
1,3-dihydro-6-fluoro-3-<2-(3-trifluoromethylphenyl)-2-oxoethylidene>-2H-indol-2-one 以
乙醇 为溶剂,
反应 8.0h,
以75%的产率得到2',3',4a,5'-tetrahydro-6-fluoro-2'-phenyl-6'-(3-trifluoromethylphenyl)spiro<3H-indole-3,4'-pyrazolo<3,4-b>-pyridine>-2(1H),3'-dione