Drug Discovery Institute, University of Pittsburgh, Pittsburgh, PA 15261, United States.
ACS Comb Sci. 2011 Mar 14;13(2):140-6. doi: 10.1021/co100040z. Epub 2010 Dec 17.
An efficient one-pot, two-step solution-phase synthetic method was developed to synthesize twenty-three 2-amino-indole-3-carboxamides (3) from 2-halonitrobenzene (1) or heterocyclic analogous and cyanoacetamides (2). In this sequence, first, intermediate 2-cyano-2-(2-nitrophenyl)acetamide (4) was generated under basic condition via S(NAr) reaction; after direct addition of hydrochloric acid solution, FeCl(3), and Zn powder, indole 3 was generated via reduction/cyclization process.
开发了一种高效的一锅两步溶液相合成方法,从 2-卤代硝基苯(1)或杂环类似物和氰基乙酰胺(2)合成了 23 种 2-氨基-3-吲哚甲酰胺(3)。在这个序列中,首先,在碱性条件下通过 S(NAr)反应生成中间体 2-氰基-2-(2-硝基苯基)乙酰胺(4);直接加入盐酸溶液、FeCl(3)和 Zn 粉后,通过还原/环化过程生成吲哚 3。