Iron-catalyzed oxidative homo-coupling of indoles via C–H cleavage
摘要:
A new method for the homo-coupling of indoles has been developed by the use of FeCl3 as catalyst and molecular oxygen as the only oxidant. The protocol provides a practical and straightforward approach toward 3,3'-biindolyls. (C) 2010 Elsevier Ltd. All rights reserved.
InBr<sub>3</sub>-Promoted Divergent Approach to Polysubstituted Indoles and Quinolines from 2-Ethynylanilines: Switch from an Intramolecular Cyclization to an Intermolecular Dimerization by a Type of Terminal Substituent Group
Use of a 2-ethynylaniline having an alkyl or aryl group on the terminal alkyne selectively produced a variety of polyfunctionalized indole derivatives in moderate to excellent yields via indium-catalyzed intramolecular cyclization of the corresponding alkynylaniline. In contrast, employment of a substrate with a trimethylsilyl group or with no substituent group on the terminal triple bond, exclusively
Copper-Catalyzed Activation of Dioxygen: Oxidative Cyclization of 2-Arylindoles
作者:Peng Sang、Yongju Xie、Jianwei Zou、Yuhong Zhang
DOI:10.1002/adsc.201200162
日期:2012.7.9
of unusual six‐ring‐fused heterocycles containing indole and quinoline skeletons was successfully synthesized by a copper‐catalyzed reaction from 2‐arylated indoles. Two new bonds were regioselectively formed from CH and CH coupling. 18O‐Labelled experiments revealed that the dioxygen is not only the oxidant but also the reactant.
Metal-free dearomative [5+2]/[2+2] cycloaddition of 1<i>H</i>-indoles with <i>ortho</i>-(trimethylsilyl)aryl triflates
作者:Xinyu Chen、Na Yang、Wen Zeng、Lei Wang、Pinhua Li、Hongji Li
DOI:10.1039/d1cc02550c
日期:——
Herein, we report a mild dearomative [5+2]/[2+2] cycloaddition of 1H-indoles with ortho-(trimethylsilyl)aryl triflates. The unique [5+2] cycloaddition enables the synthesis of a series of dibenzo[b,e]azepine derivatives in moderate to good yields. Increasing the steric hindrance at the C2-position of 1H-indoles leads to the [2+2] cycloaddition. Mechanistic investigations support that the reaction of
在此,我们报告了 1 H -吲哚与邻-(三甲基甲硅烷基)芳基三氟甲磺酸酯的温和脱芳基[5+2]/[2+2] 环加成反应。独特的 [5+2] 环加成可以合成一系列二苯并[ b , e ]氮杂衍生物,收率中等至良好。增加 1 H-吲哚的 C2 位的空间位阻导致 [2+2] 环加成。机理研究支持 1 H-吲哚与芳烃的反应经历 [2+2] 环加成步骤,然后扩环为 [5+2] 环加成产物。
Design, synthesis and biological evaluation of structurally new 4-indolyl quinazoline derivatives as highly potent, selective and orally bioavailable EGFR inhibitors
representative EGFR inhibitors have been approved for clinical use, it is highly desirable to develop highly potent and selective EGFR inhibitors with novel scaffolds because of the occurrence of acquired resistance after treatment. Here we first demonstrate that the 4-indolyl quinazoline derivatives could potently inhibit EGFR in vitro and in vivo, of which YS-67 effectively and selectively inhibits EGFR[WT]