Palladium catalyzed nitrile insertion and cyanation of biindoles: Synthesis of indole fused α-carboline scaffolds via double C–H activation
作者:Adula Kalyani、R.N. Prasad Tulichala、Sachin Chauhan、K.C. Kumara Swamy
DOI:10.1016/j.tetlet.2021.153600
日期:2022.1
A palladium-catalyzed synthesis of indole fused α-carbolines (pyridodiindoles) from 2,3′-biindoles and nitriles has been developed. This conversion involves the double C–H activation and cyclization of 2,3′-biindoles with nitriles via C–C and C–N bond formation in a single step. However, C-3 cyanated biindoles were formed through a retro-Mannich pathway when the reaction was carried out with ethyl
已经开发了由 2,3'-双吲哚和腈类合成吲哚稠合 α-咔啉(吡啶二吲哚)的钯催化合成方法。这种转化涉及在一个步骤中通过 C-C 和 C-N 键形成 2,3'-双吲哚与腈的双 C-H 活化和环化。然而,当与氰基乙酸乙酯进行反应时,C-3 氰化双吲哚通过逆曼尼希途径形成。