Cu-Catalyzed Cyanation of Indoles with Acetonitrile as a Cyano Source
作者:Mengdi Zhao、Wei Zhang、Zengming Shen
DOI:10.1021/acs.joc.5b01419
日期:2015.9.4
for the synthesis of 3-cyanoindoles has been developed. The Cu/TEMPO/(Me3Si)2 system has been identified to promote highly efficient and selective C–H cyanation of indoles by use of unactivated acetonitrile as a cyano source via a sequential iodination/cyanation process in one pot. This reaction furnishes 3-cyanoindoles in moderate to good yields and tolerates a series of functional groups. Moreover
已经开发了铜催化的用乙腈对吲哚进行氰化反应以合成3-氰基吲哚的方法。Cu / TEMPO /(Me 3 Si)2系统已被鉴定为通过在一个锅中通过顺序碘化/氰化过程使用未活化的乙腈作为氰源来促进吲哚的高效且选择性的CH氰化。该反应以中等至良好的产率提供3-氰基吲哚并耐受一系列官能团。而且,低成本的铜催化剂和无害的乙腈作为氰基源具有该反应的实用性。
Synthesis of 3-Cyanoindole Derivatives Mediated by Copper(I) Iodide Using Benzyl Cyanide
作者:On Ying Yuen、Pui Ying Choy、Wing Kin Chow、Wing Tak Wong、Fuk Yee Kwong
DOI:10.1021/jo3028278
日期:2013.4.5
Copper-mediated direct and regioselective C3-cyanation of indoles using benzyl cyanide as the cyanide anion source is presented. A wide range of indoles undergo cyanation smoothly by employing a reaction system of copper(I) iodide under open-to-air vessels.
Copper-Catalyzed Regioselective Cyanation of Indoles via C-H Bond Activation with α-Aminoacetonitriles
作者:Muhammad Siddique Ahmad、Qifeng Wang、Kamel Meguellati、Ruqiya Qasim、Bing Zeng、Qing Zhang、Ehtesham Ul Haq Shah、Nasar Ud Din
DOI:10.1055/a-2088-8997
日期:2023.10
organic cyanating agent, 2-(diisopropylamino)acetonitrile is disclosed for the regioselectivesynthesis of cyanated indoles such as 2-cyanoindole and 3-cyanoindole derivatives. This method can tolerate a variety of functionalgroups and can furnish the corresponding cyanated products in moderate to high yields. Moreover, Cu/PhSiH3 system has been identified for the regioselective cleavage of C–H bonds
Copper-mediated selective aerobic oxidative C3-cyanation of indoles with DMF
作者:Jing Xiao、Qiang Li、Tieqiao Chen、Li-Biao Han
DOI:10.1016/j.tetlet.2015.09.044
日期:2015.10
Under an oxygen atmosphere, the copper-mediated direct C3-cyanation of indole C-H bonds, using cheap and safe DMF as a CN source, took place selectively to produce the corresponding C3-cyanoindoles in good yields. A possible mechanism for this selective cyanation was proposed. (C) 2015 Elsevier Ltd. All rights reserved.
The palladium-catalyzed direct C3-cyanation of indoles using acetonitrile as the cyanide source
The ligand-free palladium-catalyzed C3-cyanation of indoles via direct C–H functionalization was achieved. This protocol, utilizing CH3CN as a green and readily available cyanide source, produced the desired products in moderate to good yields through transition-metal-catalyzed C–CN bond cleavage.