range of 3-substituted-4,6-dimethoxyindoles bearing electron-withdrawing groups in either the 2- or 7-position, can be nitrated using nitric acid in acetonitrile, to give 7-nitro and 2-nitro-indoles, respectively. Those without electron-withdrawing groups undergo oxidative dimerisation at C7, if 2,3-disubstituted, and at C2, if N-methylated and unsubstituted at C2.
可以在
乙腈中使用
硝酸硝化一系列在2或7位带有吸电子基团的3-取代的
4,6-二甲氧基吲哚,分别得到7-硝基和2-硝基
吲哚。如果没有2,3-二取代的话,那些不具有吸电子基团的化合物在C7进行氧化二聚,如果在C2进行N-甲基化和未取代,则在C2进行氧化二聚。