1-methylisatin-3-p-chlorophenylhydrazone 、
丁炔二酸二甲酯 在
copper diacetate 作用下,
生成 dimethyl 8-methylfuro<2,3-b>indole-2,3-dicarboxylate 、 1-methyl-2-indolinone-3-spiro-5'-1'-p-chlorophenyl-3',4'-dimethoxycarbonyl-2'-pyrazoline 、 dimethyl 2-3'-p-chlorophenyl-1'-methyl-2'-oxindolin-3'-yl-3-1"-methyl-2"-oxindolin-3"-ylidenbutanedioate 、 dimethyl 2-1'-methyl-2'-oxindolin-3'-yl-5-1"-methyl-2"-oxindolin-3"-yliden-3,4-dimethoxycarbonyl-2-hexenedioate