Pd-Catalyzed Tandem C−N/C−C Coupling of gem-Dihalovinyl Systems: A Modular Synthesis of 2-Substituted Indoles
摘要:
2-Substituted indoles were synthesized via a Pd-catalyzed tandem C-N/Suzuki-Miyaura coupling from readily prepared ortho-gemdihalovinylanilines. Optimal conditions used a Pd(OAC)(2)/S-Phos catalyst in the presence of (K3PO4H2O)-H-. and an organoboron reagent, which included boronic acids, esters, alkyl 9-BBN derivatives, and trialkylboranes. Yields of the desired indoles were good to excellent using low catalyst loadings (typically 1 mol %).
Pd‐Catalyzed Reductive Cyclization of Nitroarenes with CO
<sub>2</sub>
as the CO Source
作者:Xinyu Guan、Haoran Zhu、Yingwei Zhao、Tom G. Driver
DOI:10.1002/ejoc.201901629
日期:2020.1.9
A practical, broad‐scope reductive amination process that constructs N‐heterocycles from nitroarenes was developed that uses CO2 as the source of CO.
开发了一种实用的,广谱的还原胺化工艺,该工艺利用硝基芳烃构建N杂环,并使用CO 2作为CO的来源。
The Trifluoromethyl Group as a Bioisosteric Replacement of the Aliphatic Nitro Group in CB<sub>1</sub> Receptor Positive Allosteric Modulators
作者:Chih-Chung Tseng、Gemma Baillie、Giulia Donvito、Mohammed A. Mustafa、Sophie E. Juola、Chiara Zanato、Chiara Massarenti、Sergio Dall’Angelo、William T. A. Harrison、Aron H. Lichtman、Ruth A. Ross、Matteo Zanda、Iain R. Greig
DOI:10.1021/acs.jmedchem.9b00252
日期:2019.5.23
(e.g., ZCZ011) featured a 3-nitroalkyl-2-phenyl-indole structure. Although a small number of drugs include the nitrogroup, it is generally not regarded as being "drug-like", and this is particularly true for aliphaticnitrogroups. There are very few case studies where an appropriate bioisostere replaced a nitrogroup that had a direct role in binding. This may be indicative of the difficulty of replicating
A Highly Selective Tandem Cross-Coupling of <i>gem</i>-Dihaloolefins for a Modular, Efficient Synthesis of Highly Functionalized Indoles
作者:Yuan-Qing Fang、Mark Lautens
DOI:10.1021/jo701987r
日期:2008.1.1
A highly efficient method of indole synthesis using gem-dihalovinylaniline substrates and an organoboron reagent was developed via a Pd-catalyzed tandem intramolecularamination and an intermolecular Suzuki coupling. Aryl, alkenyl, and alkyl boron reagents are all successfully employed, making for a versatile modular approach. The reaction tolerates a variety of substitution patterns on the aniline
“On Water” Direct and Site-Selective Pd-Catalysed CH Arylation of (NH)-Indoles
作者:Lionel Joucla、Nelly Batail、Laurent Djakovitch
DOI:10.1002/adsc.201000512
日期:2010.11.22
communication describes the development of a versatile catalytic system based on palladium(II) acetate/bis(diphenylphosphino)methane [Pd(OAc)2/dppm] that works “on water” giving site-selective CH arylation of (NH)-indoles without protecting or directing groups. Remarkably, the control of regioselectivity was achieved by small changes in the “extra-catalytic” base/halide partners. These innovative methodologies
[EN] INDOLES AND AZAINDOLES AS ANTIVIRAL AGENTS<br/>[FR] INDOLES ET AZAINDOLES UTILISES COMME AGENTS ANTIVIRAUX
申请人:ANGELETTI P IST RICHERCHE BIO
公开号:WO2005034941A1
公开(公告)日:2005-04-21
The present invention relates to indoles and azaindoles of formula (I): wherein X1, X2, X3, X4, A1, Ar1, Ar, n, p and q are as defined herein and pharmaceutically acceptable salts thereof, useful in the prevention and treatment of hepatitis C virus infections.