Convenient preparation of N-substituted indoles by modified Leimgruber-Batcho indole synthesis
作者:Jotham W Coe、Michael G Vetelino、Michael J Bradlee
DOI:10.1016/0040-4039(96)01311-1
日期:1996.8
A modified reductive alkylation of pre-indole 3, prepared from readily available Leimgruber-Batcho indole synthesis derived intermediates, followed by acidic methanolysis generates 6-carbomethoxy-N-substituted indoles. The three step preparation of pre-indole 3 from substituted 2-nitrotoluene 1 in 66% yield and conversion to a variety of N-substituted indoles is presented.
由容易获得的Leimgruber-Batcho吲哚合成衍生的中间体制备的前吲哚3的修饰还原烷基化,然后进行酸性甲醇分解,生成6-碳甲氧基-N-取代的吲哚。提出了由取代的2-硝基甲苯1以66%的收率并转化为多种N-取代的吲哚的三步制备吲哚3的步骤。