Synthesis of polysubstituted benzofuran derivatives as novel inhibitors of parasitic growth
摘要:
A series of polysubstituted benzofuran derivatives was easily and rapidly prepared using a tandem Sonogashira coupling/cyclization reaction. Subsequent acylation afforded a small library of 39 new compounds that were assayed in cellulo on Plasmodium falciparum and Tiypanosoma brucei parasites. Some of them exhibited good inhibitory activity on T. brucei proliferation. (C) 2013 Elsevier Ltd. All rights reserved.
Indium(III)-Catalyzed Synthesis of Benzo[<i>b</i>]furans by Intramolecular Hydroalkoxylation of <i>ortho</i>-Alkynylphenols: Scope and Mechanistic Insights
作者:Lorena Alonso-Marañón、M. Montserrat Martínez、Luis A. Sarandeses、Enrique Gómez-Bengoa、José Pérez Sestelo
DOI:10.1021/acs.joc.8b00829
日期:2018.8.3
Indium(III) halides catalyze the hydroalkoxylation reaction of ortho-alkynylphenols to afford benzo[b]furans in good yields. The reaction proceeds with 5-endo-dig regioselectivity with a variety of phenols functionalized at the arene and alkyne moieties in high yields using InI3 (5 mol %) in DCE. Experimental and computational studies support a mechanism based on the indium(III) π-Lewis acid activation
卤化铟(III)催化邻炔基苯酚的加氢烷氧基化反应,以高收率提供苯并[ b ]呋喃。反应的进行与5-内切-挖区域选择性与各种在芳烃官能酚类和以高产率使用的InI炔基部分3在DCE(5摩尔%)。实验和计算研究支持了基于炔烃的铟(III)π-路易斯酸活化,然后进行苯酚的亲核加成和最终的原金属脱金属,得到相应的苯并[ b ]呋喃的机理。DFT计算表明二聚体In 2 I 6 是通过与炔烃和羟基的新型双配位而催化的物质。
Acid-promoted selective synthesis of trifluoromethylselenolated benzofurans with Se-(trifluoromethyl) 4-methylbenzenesulfonoselenoate
A Brönsted acid-promoted trifluoromethylselenolation of benzofurans was disclosed by using Se-(trifluoromethyl) 4-methylbenzenesulfonoselenoate as a stable and easily prepared electrophilic trifluoromethylselenolating reagent. A wide range of SeCF3-substituted benzofuran derivatives were obtained in moderate to good yields with excellent regioselectivity. The tandem cyclization/trifluoromethylselenolation
Heterocycles by PtCl<sub>2</sub>-Catalyzed Intramolecular Carboalkoxylation or Carboamination of Alkynes
作者:Alois Fürstner、Paul W. Davies
DOI:10.1021/ja055659p
日期:2005.11.1
carboalkoxylation, hydroamination, and carboamination reactions of alkynes, effecting the formation of substituted benzo[b]furan, indole-, and isochromene-1-one derivatives, respectively. This procedure allows for the transfer of (substituted) allyl, methoxymethyl (MOM), benzyloxymethyl (BOM), and (trimethylsilyl)ethoxymethyl (SEM) groups from oxygen to carbon and is compatible with functional groups
PtCl2 是炔烃分子内加氢烷氧基化、碳烷氧基化、加氢胺化和氨基化反应的方便催化剂,分别影响取代的苯并[b]呋喃、吲哚-和异色烯-1-酮衍生物的形成。此过程允许(取代的)烯丙基、甲氧基甲基 (MOM)、苄氧基甲基 (BOM) 和(三甲基甲硅烷基)乙氧基甲基 (SEM) 基团从氧转移到碳,并且与易于氧化插入低价的官能团相容以前用于类似目的的金属种类。尽管某些反应甚至可以在空气中进行,但在 CO 气氛下进行时反应速率会显着增加。 提出了一个机械原理,
[EN] NOVEL FERROCENE-BASED UNSYMMETRICAL LIGANDS BEARING BULKY DI(ADAMANTLY)PHOSPHINO MOTIF AND THEIR METAL CATALYSTS<br/>[FR] NOUVEAUX LIGANDS ASYMÉTRIQUES À BASE DE FERROCÈNE PORTANT UN MOTIF DI(ADAMANTYLE)PHOSPHINO VOLUMINEUX ET LEURS CATALYSEURS MÉTALLIQUES
申请人:SIGMA ALDRICH CO LLC
公开号:WO2022204490A1
公开(公告)日:2022-09-29
Ferrocenyl-based unsymmetrical ligands containing di(l-adamantyl)phosphino groups with general formula, Fc(Ad2P)(R2P) and corresponding metal complexes, include metal halide complexes, N-biphenyl metal cationic complexes and R-allyl metal cationic complexes, useful in catalysis. The ligands and complexes overcome problems with conventional catalysts, providing new routes to previously challenging cross-coupling reactions, including C-P coupling, Csp2-Csp3coupling and other conventional cross-coupling applications, while being scalable so that they can be provided in sufficient quantity and purity for industrial applications.