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。
The Palladium-Catalyzed Trifluoromethylation of Aryl Chlorides
作者:Eun Jin Cho、Todd D. Senecal、Tom Kinzel、Yong Zhang、Donald A. Watson、Stephen L. Buchwald
DOI:10.1126/science.1190524
日期:2010.6.25
materials. Despite the importance of this substituent, no general method exists for its installment onto functionalized aromatic substrates. Current methods either require the use of harsh reaction conditions or suffer from a limited substrate scope. Here we report the palladium-catalyzed trifluoromethylation of aryl chlorides under mildconditions, allowing the transformation of a wide range of substrates
Metal‐ and Oxidant‐Free Electrosynthesis of Heterocycles from 1,2‐Diarylalkene Derivatives
作者:Eunsoo Yu、Hyungguk Kim、Cheol‐Min Park
DOI:10.1002/adsc.202200847
日期:2022.12.8
Synthesis of heterocycles from 1,2-diarylalkene derivatives through electrosynthesis under metal- and oxidant-free conditions has been discovered. Cathodic reduction of 2-alkenylbenzoic acid or anodic oxidation of 2-alkenylbenzamide, 2-alkenylphenol and 2-alkenylaniline leads to the formation of reactive radical intermediates which afford corresponding phthalide, isochroman-1-one, isoindolin-1-one
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。