Oxidative Coupling of Indoles with Ethyl 2-(Disubstituted Amino)Acetates: An Approach to Achieve Indolylglycine Derivatives
作者:Zhanwei Xu、Xiaoqiang Yu、Xiujuan Feng、Ming Bao
DOI:10.1021/jo301035h
日期:2012.8.17
An efficient method for the synthesis of indolylglycine derivatives is described. The oxidativecoupling reactions of ethyl 2-(disubstituted amino)acetates with indoles proceeded smoothly in the presence of meta-chloroperoxybenzoic acid (mCPBA) under ambient conditions to produce indolylglycine derivatives in satisfactory to excellent yields.
An efficient synthesis of N-substituted indoles from indoline/indoline carboxylic acid via aromatization followed by C–N cross-coupling reaction by using nano copper oxide as a recyclable catalyst
new and elegant protocol for the synthesis of 1-substituted indoles was developed via aromatization of indoline/indoline carboxylic acid followed by C–N cross-coupling with various aryl halides in the presence of nano CuO as a recyclable catalyst, Cs2CO3 as a base in DMSO at 80 °C. 1-Substituted indoles were obtained in good to excellent yields and the catalytic system can be recycled up to four cycles
通过将二氢吲哚/二氢吲哚羧酸芳构化,然后在作为可回收催化剂的纳米CuO Cs 2 CO 3的存在下,与各种芳基卤化物进行C–N交叉偶联,开发了一种新的且优雅的合成1-取代的吲哚的方案。在80°C下用作DMSO的碱。得到的1-取代的吲哚的收率高至优异,催化体系最多可循环使用四个循环而不会损失催化活性。
Nickel-Catalyzed Direct Synthesis of <i>N</i>-Substituted Indoles from Amino Alcohols and Alcohols
作者:Vinita Yadav、Sayali G. Jagtap、Ekambaram Balaraman、Santosh B. Mhaske
DOI:10.1021/acs.orglett.2c03617
日期:2022.12.16
primary alcohols, cyclic and acyclic secondary alcohols, and various substituted 2-aminophenyl ethyl alcohols are employed in the reactionconditions to provide a diverse range of N-alkylated indoles. Mechanistic studies revealed that the reaction proceeds through tandem N-alkylation via hydrogen autotransfer followed by the cyclization of N-alkylated alcohol intermediate.
Visible
<scp>
<b>Light‐Driven Catalyst‐Free</b>
</scp>
Amination of Indoles Initiated by Electron
<scp>
<b>Donor‐Acceptor</b>
</scp>
Complexes
作者:Jiahong Sui、Zhonglie Yang、Shuangqiao Li、Xueqin Chen、Xiaobin Zhang、Qing Shen、Hezhong Jiang、Jiahong Li
DOI:10.1002/cjoc.202200772
日期:——
without any additives was initiated via electrondonor-acceptor (EDA) complex formed by indole and N-aminopyridinium salt. This method was compatible with a wide range of substrates and could proceed smoothly without the addition of any photocatalysts, transition-metal catalysts, or bases. A variety of studies were carried out to examine the presence of EDA complex.
Direct Synthesis of Fused Thienoindoles via Base Promoted Double C−H Sulfuration with Elemental Sulfur
作者:Shanping Chen、Kai Hu、Wei Feng、Guojiang Mao、Yuxia Li、Guo‐Jun Deng
DOI:10.1002/adsc.202300443
日期:2023.6.13
indoles and elemental sulfur has been reported. The present approach produces a range of structurally valuable fused thienoindoles in 51–78% yield under transition-metal-free conditions, which may have potential applications in pharmaceutical industry and organic functional materials. In this work, the double C−S bonds formation is achieved via base promoted direct sulfuration of C−H bonds with elemental