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Copper- and Silver-Mediated Cyanation of aryl iodides Using DDQ as Cyanide Source

Chinese Journal of Chemistry 2013年第4期31卷 449-452页

作者： Kui Zheng Peng Yu Shuyou Chen Fen Chen Jiang Cheng College of Chemistry & Materials Engineering Wenzhou University Wenzhou Zhejiang 325035 China School of Petrochemical Engineering Changzhou University Changzhou Jiangsu 213164 China

A new copper and silver-mediated cyanation of aryl iodides with DDQ as a cyanide source is achieved, provid- ing nitriles with good yields. This new approach represents a safe method leading to aryl nitriles.

关键词： copper silver cyanation aryl iodides DDQ

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Electrochemically Generated Iodine Cations from a Glassy Carbon Electrode for Highly Selective Iodination of Anisole

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Transactions of Tianjin University 2022年第6期28卷 433-439页

作者： Liang Yan Haitao Lei Pengcheng Yang Wei Zhang Shaanxi Coal Chemical Technology Research Institute Co. LtdXi’an 710100China School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an 710119China

The synthesis of aryl iodides from commercially available raw chemicals by simple,cheap and green strategies is of fundamental signifi cance.aryl iodides can undergo a series of homo-/cross-coupling reactions for the synthesis of important industrial chemicals and materials.Traditional methods require the electrophilic substitution on aromatic compounds by iodine or hypervalent iodine compounds,which suff ers from the use of erosive halogens or hazardous oxidants.With the development of green chemistry in the fi eld of electrochemical synthesis,anodic oxidation-derived I^(+)cations have been used for substitution reactions.However,the selectivity of the iodination by these electrochemical methods remains unsatisfactory.We believed that the anolyte is contaminated by trace platinum species from the working electrode.Herein,we report the generation of active I^(+)species from the anodic oxidation of I_(2) in acetonitrile using a glassy carbon electrode.With the presence of H^(+),electrolyte prepared with a glassy carbon anode can react with anisole to selectively form 4-iodoanisole with a yield as high as 97%.On contrast,the electrolytes prepared from Pt and graphite anodes fi nished the reaction with yields of 16%and 60%for 4-iodoanisole,respectively.This electrochemical method also applies to the iodination of toluene,benzonitrile and bromobenzene,delivering the target para-iodination products with 92%,84%,and 73%yields,respectively.Thus,an atom-effi cient and highly selective aryl iodination method was developed without the use of excessive oxidants.

关键词： Iodination Electrochemistry Anodic oxidation aryl iodides Selectivity

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Palladium Nanoparticals Catalyzed Atom-Efficient Stille Cross -Coupling Reaction of Tetraphenylstannane with aryl Halides

Palladium Nanoparticals Catalyzed Atom-Efficient Stille Cros...

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甘肃省化学会第二十七届年会暨第九届甘肃省中学化学教学经...

作者： Yuanmin Zhang,Wenwen Zhang,Zhengyin Du~* (College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070)

The Stille coupling of tetraphenylstannane with aryl iodides or aryl bromides using the palladium nanoparticles in situ formed from PdCl/PEG-400 under microwave irradiation has been developed.

关键词： aryl bromides aryl iodides atom efficiency polyethylene glyco1400（PEG400） Stille coupling tetraphenylstannane

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