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Synthesis of α-arylated Esters from aryl halides

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Chinese Chemical Letters 2006年第5期17卷 595-598页

作者： Wei DENG Ye Feng WANG Lei LIU Qing Xiang GUO Department of Chemistry University of Science and Technology of China Hefei 230026

An operationally simple and inexpensive catalyst system was developed for the cross coupling of aryl iodides and bromides with ethyl acetoacetate by using CuI as catalyst and Nmethyl glycine as ligand. The reaction represents a novel Cu-catalyzed C-C cross coupling reaction. This procedure is applicable to the preparation of pharmaceutically important α- arylalkanoic acids.

关键词： Cross coupling reaction CuI ethyl acetoacetate aryl halide α-arylalkanoic acids.

Palladium-catalyzed Coupling between aryl halides and Trimethylsilylacetylene Assisted by Dimethylaminotrimethyltin

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Chinese Journal of Chemistry 2011年第5期29卷 1059-1062页

作者：蔡良珍杨杜娟孙忠华陶晓春蔡利生 Pike Victor W. School of Chemical and Molecular Engineering East China University of Science and Technology Shanghai 200237 China Molecular Imaging Branch National Institute of Mental Health National Institutes of Health Bethesda MD 20892 U. S. A.

Palladium-catalyzed coupling between aryl halides, especially less reactive ones or N-heteroaryls, and trimethylsilylacetylene in the presence of dimethylaminotrimethyltin generated the coupled products in high yields... 详细信息

关键词： palladium catalysis trimethylsilylacetylene aryl halide dimethylaminotrimethyltin Sonogashira coupling

Dehalogenation of aryl halides Catalyzed by MontK10 Immobilized PVP-Pd-Sn Catalyst in Aqueous System

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Chinese Chemical Letters 2001年第4期12卷 287-290页

作者： Xiao Li ZHEN Jian Rong HAN Ru Hong KANG Xing Mei OUYANG Department of Essential Education Hebei Science(Technique UniversityShijiazhuang 050018 Department of Chemistry Heibei Normal UniversityShijiazhuang 050016

A series of PVP-Pd-Sn/MontK10 catalysts were prepared by immobilization of PVP[poly(N-vinyl-2-pyrrolidone)] supported bimetallic catalyst using MontK10 as carrier. This catalyst has good catalytic activity for hydrogen transfer dehalogenation of aryl halides. The catalytic reaction was carried out in aqueous system in the presence of phase transfer catalyst and sodium formate as hydrogen source. The catalyst with loading Pd 0.19wt% and molar ratio of Pd/Dn 8:1 gives the highest activity and good stability. This catalyst is more reducible with NaBH4. It is also found that the catalyst is easily separated from the reaction system.

关键词： Phase transfer catalyst aryl halide dehalogenation MontK10

Direct N-arylation of Azaheterocycles with aryl halides under Ligand-free Condition

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Chinese Journal of Chemistry 2012年第10期30卷 2389-2393页

作者：杨奇超王玉芳张保集张明杰 Chemistry Department School of ScienceTianjin UniversityTianjin 300072China Chemistry and Pharmaceutical Engineering College Nanyang Normal UniversityNanyangHenan 473061China

A simple and efficient C--N cross-coupling method of aryl halides with various heterocycles was reported, by using 10 tool% of CuI as catalyst and 1.2 equiv. Nail as base. aryl iodides, aryl bromides and many substituted atyl chlorides could efficiently react with heterocycles, providing variety of N-arylated products in good to excellent yields. The ligand-free catalyst system was stable in air and could be readily reused.

关键词： N-arylation aryl halide heterocycle cross-coupling CuI

A facile approach to asymmetrical biaryls via coupling reaction of aryl halides with sodium tetraphenylborate catalyzed by MCM-41-supported sulfur palladium(0) complex

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Chinese Chemical Letters 2007年第4期18卷 387-389页

作者： Qiu Hua Xu Ping Ping Wang Ming Zhong Cai Department of Chemistry Jiangxi Normal University 330027 Nanchang China Department of Chemistry Jiujiang University 332000 Jiujiang China

Various functionalized asymmetrical biaryls can be synthesized in high to excellent yields via coupling reaction of aryl iodides or bromides with NaBPh4 catalyzed by MCM-41-supported sulfur palladium（0） complex. Thi... 详细信息

关键词： Asymmetrical biaryl NaBPh4 aryl halide Palladium Coupling reaction

An Efficient Synthesis of Diaryl Ethers by Coupling aryl halides with Substituted Phenoxytrimethylsilane in the Presence of TBAF

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Chinese Chemical Letters 2003年第10期14卷 1012-1014页

作者： Jian Kui ZHAO, Yan Guang WANG Department of Chemistry, Zhejiang University, Hangzhou 310027 Department of Chemistry Zhejiang University Hangzhou 310027 China

A general synthesis of diaryl ethers via coupling of aryl halides with substituted phenoxytrimethylsilane in the presence of TBAF is described. The protocol is simple and mild, and gives good to excellent yields.

关键词： Diaryl ether TBAF aryl halide phenoxytrimethylsilane.

Fe_(3)O_(4)-carbon spheres core–shell supported palladium nanoparticles:A robust and recyclable catalyst for suzuki coupling reaction

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Chinese Journal of Chemical Engineering 2022年第11期51卷 75-85页

作者： Mohamed A.Almaradhi Hassan M.A.Hassan Mosaed S.Alhumaimess Department of Chemistry College of ScienceJouf UniversityPO Box 2014SakakaSaudi Arabia

Suzuki-Miyaura(S-M)is regarded the most powerful way for synthesis biaryls,triaryls,or incorporating of substituted aryl moieties in organic preparation by the cross-coupling of aryl boronic acid with aryl halides using the Pd *** work reports the combining of the hydrothermal and microwaveassisted protocol to convert the glucose to magnetic carbon spheres(Fe_(3)O_(4)-CSPs)decorated with Pd nanoparticles(NPs)as the catalyst for Suzuki-Miyaura cross-coupling *** physicochemical properties in the produced composite were examined using FESEM,HRTEM,nitrogen isotherms,Raman spectroscopy,FTIR,XPS,and *** as-fabricated composite Pd/Fe_(3)O_(4)-CSPs is mostly spherical with a core–shell structure and possesses a great surface area of 253.2 m^(2).g^(-1).Its catalytic performance demonstrates that the composite has excellent stability and high tolerance Suzuki-Miyaura crosscoupling reactions in 30 min at 80℃.Both activated and deactivated aryl halides provided excellent *** as-fabricated catalyst was recycled for up to four catalytic cycles without a substantial decline in ***,this research offers a facile roadmap for synthesizing Pd/Fe_(3)O_(4)-CSPs composites and promoting the practical implementation of Pd/Fe_(3)O_(4)-CSPs catalysts for organic transformation processes.

关键词： Heterogeneous catalysis aryl halide Suzuki coupling Palladium nanoparticles Carbon spheres

Mild and Efficient CuI Catalyzed Coupling Reactions of Amides with Bromides

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Chinese Journal of Chemistry 2005年第9期23卷 1241-1246页

作者：邓维张晨刘敏邹燕刘磊郭庆祥 Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 China

In this article, a general, simple, and inexpensive catalyst system was developed for the amidation of aryl bromide by using CuI as catalyst, amino acid as ligand, and K3PO4 as base.

关键词： copper Goldberg reaction amide aryl halide coupling

CO_2 as Both a Selective Agent and Reaction Media in Palla-dium-Catalyzed Reductive Ullmann-Type Coupling Reaction

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Chinese Journal of Chemistry 2004年第9期22卷 966-970页

作者：李金恒谢叶香 Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha Hunan 410081China

Carbon dioxide as both a selective agent and reaction media in the palladium-catalyzed Ullmann-type coupling has been described. The results showed that aryl chlorides could be easily activated in the presence of carbon diox-ide and the chemoselectivity shifted toward the palladium-catalyzed Ullmann-type coupling reaction. In liquid car-bon dioxide, homocoupling reactions of aryl halides, including less reactive aryl chlorides, were carried out smoothly in moderate to good yields using Pd/C, zinc, and H2O as the catalytic system at room temperature.

关键词： carbon dioxide a selective agent reaction media palladium Ullmann-type coupling reaction aryl halide