已经开发了一种方便的 4-(imidazol-1-yl) 吲哚衍生物的一锅法组装,来自易于获得的邻炔基苯胺和咪唑。顺序脱芳构化和 Ag( I ) 催化的环化/Cs 2 CO 3介导的共轭加成/芳构化级联反应表现出高效率和出色的选择性。银 ( I ) 盐和碳酸铯的组合使用对于促进这种多米诺骨牌转换具有重要意义。4-(imidazol-1-yl)indole产物很容易转化为相应的衍生物,在生物化学和医药科学方面具有重要价值。
Rhodium(III)-Catalyzed Cascade Cyclization/Electrophilic Amidation for the Synthesis of 3-Amidoindoles and 3-Amidofurans
作者:Zhiyong Hu、Xiaofeng Tong、Guixia Liu
DOI:10.1021/acs.orglett.6b00689
日期:2016.5.6
A rhodium(III)-catalyzed cascade cyclization/electrophilic amidation using N-pivaloyloxylamides as the electrophilic nitrogen source has been developed. This protocol provides an efficient route for the synthesis of 3-amidoindoles and 3-amidofurans under mild conditions with good functional group tolerance. The synthetic utility of this reaction has been demonstrated through the derivatization of the
Stereoselective Synthesis of Acyclic Tetrasubstituted Alkenes from Anilines by Dearomatization and Trimethylenemethane Cycloaddition
作者:Lei Li、Qiuqin He、Renhua Fan
DOI:10.1021/acs.orglett.1c03974
日期:2022.1.14
A method for stereoselective construction of acyclic all-carbon tetrasubstituted alkenes through insertion of nitrile-substituted trimethylenemethane into the aryl C–N bond in anilines via an aromaticity destruction-reconstruction process is reported. The process involves dearomatization, azo-[3 + 2] TMM cycloaddition and aromatization-triggered rearrangement.
Synthesis of 4-Alkylindoles from 2-Alkynylanilines via Dearomatization- and Aromatization-Triggered Alkyl Migration
作者:Lei Li、Xiaohua Li、Weiyi Wang、Qiuqin He、Renhua Fan
DOI:10.1021/acs.orglett.1c00280
日期:2021.3.19
simple method for rapid synthesis of 4-alkylindoles from 2-alkynylanilines was reported. The protocol involves an oxidative dearomatization and an aromatization triggered regioselective alkylmigration. A range of alkyl groups including linear, branched, or cycloalkyl groups can be introduced into the C4 position of indole.
Cyclic <i>Anti</i>-Azacarboxylation of 2-Alkynylanilines with Carbon Dioxide
作者:Bukeyan Miao、Suhua Li、Gen Li、Shengming Ma
DOI:10.1021/acs.orglett.6b00884
日期:2016.6.3
compounds for the synthesis of many biologically active compounds, efficiently under 1 atm of CO2. The readily available nature of the different starting materials and tolerance of variousfunctionalgroups provide vast opportunities for the efficient construction of diversified libraries for bioactive compounds listed in Figure 1. As an example, this methodology has been applied to the synthesis of Lotronex
Facile synthesis of 2-substituted benzo[<i>b</i>]furans and indoles by copper-catalyzed intramolecular cyclization of 2-alkynyl phenols and tosylanilines
CuCl and Cs2CO3 was employed to synthesize a variety of 2-substituted benzo[b]furans and indoles by an intramolecular cyclization of 2-alkynyl phenols and tosylanilines. This protocol features mild conditions, high yields and broad substrate scope, which makes it a practical method for the synthesis of 2-substituted benzo[b]furans and indoles.
催化量的 CuCl 和 Cs 2 CO 3用于通过 2-炔基酚和甲苯磺酰苯胺的分子内环化合成各种 2-取代的苯并[ b ]呋喃和吲哚。该方案条件温和、产率高、底物范围广,是合成2-取代苯并[ b ]呋喃和吲哚的实用方法。