1-丁基-2-甲基吲哚 、
4-硝基邻苯二甲酸酐 在
乙酸乙酯 、 petroleum ether 作用下,
以
乙酸乙酯 为溶剂,
反应 0.17h,
以to yield 19.6 g (86% of theory) of the two isomers 1-n-butyl-2-methyl-3-(2'-carboxy-4'-nitrobenzoyl) indole and 1-n-butyl-2-methyl-3-(2'-carboxy-5'-nitro-benzoyl)-indole having a melting point of 165°-167° C.的产率得到1-n-butyl-2-methyl-3-(2'-carboxy-4'-nitrobenzoyl) indole