使用电子供体从相应的芳基卤化物生成芳基自由基,然后与芳烃进行分子内环化,可能是当代联芳基合成的重要进步。本文报道了一种绿色且实用的合成方案,用于获取各种六元和七元联芳基磺胺类化合物,尤其是具有游离 NH 基团的化合物,包括克级合成的演示。次硫酸根阴离子自由基 (SO 2 –• ),由试剂雕白粉或连二亚硫酸钠 (Na 2 S 2 O 4),被发现是从芳基卤化物形成芳基自由基的关键单电子转移剂,其在分子内芳基化后得到具有良好至优异产率的联芳基磺胺。该方法的特点是产生仍未开发的芳基自由基,使用廉价且易于获得的工业试剂,以及无过渡金属、温和和绿色的反应条件。
Convenient preparation of N-8-quinolinyl benzenesultams as novel NF-κB inhibitors
作者:Yuli Xie、Gangli Gong、Yidong Liu、Shixian Deng、Alison Rinderspacher、Lars Branden、Donald W. Landry
DOI:10.1016/j.tetlet.2008.01.136
日期:2008.3
An efficient synthesis of a series of N-8-quinolinyl benzenesultarns as novel NF-kappa B inhibitors was described via diazotization-induced cyclization of easily accessible N-8-quinolinyl-2-aminobenzenesulfonamides. (C) 2008 Elsevier Ltd. All rights reserved.
Regioselective Access to Sultam Motifs through Cobalt-Catalyzed Annulation of Aryl Sulfonamides and Alkynes using an 8-Aminoquinoline Directing Group
作者:Oriol Planas、Christopher J. Whiteoak、Anna Company、Xavi Ribas
DOI:10.1002/adsc.201500690
日期:2015.12.14
The use of cobalt as catalyst in direct CH activation protocols as a replacement for more expensive second row transition metals is currently attracting significant attention. Herein we disclose a facile cobalt-catalyzed CH functionalization route towards sultammotifsthroughannulation of easily prepared arylsulfonamides and alkynesusing8-aminoquinoline as a directinggroup. The reaction shows
Sulfoxylate Anion Radical-Induced Aryl Radical Generation and Intramolecular Arylation for the Synthesis of Biarylsultams
作者:Joydev K. Laha、Pankaj Gupta
DOI:10.1021/acs.joc.1c03031
日期:2022.3.18
Aryl radical generation from the corresponding aryl halides using an electron donor and subsequent intramolecular cyclization with arenes could be an important advancement in contemporary biaryl synthesis. A green and practically useful synthetic protocol to access diverse six- and seven-membered biarylsultams especially with a free NH group including demonstration of a gram-scale synthesis is reported
使用电子供体从相应的芳基卤化物生成芳基自由基,然后与芳烃进行分子内环化,可能是当代联芳基合成的重要进步。本文报道了一种绿色且实用的合成方案,用于获取各种六元和七元联芳基磺胺类化合物,尤其是具有游离 NH 基团的化合物,包括克级合成的演示。次硫酸根阴离子自由基 (SO 2 –• ),由试剂雕白粉或连二亚硫酸钠 (Na 2 S 2 O 4),被发现是从芳基卤化物形成芳基自由基的关键单电子转移剂,其在分子内芳基化后得到具有良好至优异产率的联芳基磺胺。该方法的特点是产生仍未开发的芳基自由基,使用廉价且易于获得的工业试剂,以及无过渡金属、温和和绿色的反应条件。