Reaction of some 4,6-dimethoxyindoles with nitric acid: nitration and oxidative dimerisation
作者:Tinnagon Keawin、Shuleewan Rajviroongit、David StC. Black
DOI:10.1016/j.tet.2004.11.026
日期:2005.1
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。