5,5-dimethyl-3-(N-naphthylamino)-cyclohex-2-enone 、
4,5-dimethoxycarbonyl-1-phenyl-1H-pyrrole-2,3-dione 以
甲苯 为溶剂,
反应 4.0h,
以76%的产率得到methyl 4'-hydroxy-6,6-dimethyl-1-(naphth-1-yl)-2,4,5'-trioxo-1'-phenyl-1,1',2,4,5,5',6,7-octahydrospiro[indole-3,2'-pyrrole]-3'-carboxylate