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palladacycle-Catalyzed Carbonylation of Aryl Iodides or Bromides with Aryl Formates

Chinese Journal of Chemistry 2013年第12期31卷 1488-1494页

作者： Guangwei Chen Yuting Leng Fan Yang Shiwei Wang Yangjie Wu College of Chemistry and Molecular Engineering Key Laboratory of Applied Chemistry of Henan Universities Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province Zhengzhou University Zhengzhou Henan 450052 China College of Mechanics & Engineering Science Zhengzhou University Zhengzhou Henan 450001 China

An efficient palladacycle-catalyzed aromatic carbonylation reaction of aryl formates with aryl iodides or bromides has been developed. Commercially available and easily prepared aryl formates were employed as carbonyl sources without the use of external carbon monoxide. The present catalytic system shows broad functional group tolerance and affords aryl benzoate derivatives in good to excellent yields.

关键词： carbonylation aryl formates palladacycle catalysis

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PEG Click-Triazole palladacycle： An Efficient Precatalyst for Palladium-Catalyzed Suzuki-Miyaura and Copper-free Sonogashira Reactions in Neat Water

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Chinese Journal of Chemistry 2015年第7期33卷 705-710页

作者： Guofu Zhang Wei Zhang Yuxin Luan Xingwang Han Chengrong Ding College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China

A novel water-soluble, phosphine-free PEG ＂click＂ triazole palladacycle has been successfully synthesized. As a precatalyst, the palladacycle exhibited superior catalytic activity towards Suzuki-Miyaura and copper-free Sonogashira cross-coupling in neat water with the turnover numbers （TONs） of up to 9.8 × 10^5. In addition, the cata- lyst could be reused at least 3 times without significant loss of reactivity.

关键词： palladium cross-coupling palladacycle N-ligands green chemistry

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Chitosan-NC-palladacycle Complexes as Effective Cheap and Recyclable Catalysts for Heck Reaction

Chitosan-NC-Palladacycle Complexes as Effective Cheap and Re...

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中国化学会第九届全国络合催化学术讨论会

作者： Xia XU San Hua LI Pu LIU (Department of Chemistry Zhengzhou University Zhengzhou 450052)

＜正＞A new family of chitosan-NC-palladacycle complexes 1-10 was synthesized. They are effective cheap and recyclable catalysts for the carbon-carbon coupling reaction of iodobenzene and butyl acrylate. The catalyst ... 详细信息

关键词： chitosan schiif base palladacycle Heck reaction

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Palladacyclic N-heterocyclic carbene precatalysts for transition metal catalysis

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Green Synthesis and Catalysis 2022年第4期3卷 327-338页

作者： Kun Wang Ruoqian Fan Xian Wei Weiwei Fang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China

palladacycles remain a challenging and significant research field in organic chemistry and have emerged as a type of powerful and versatile precatalysts or key active intermediates for transition metal *** achievements in this area are correlated to the design and development of useful ancillary ligands,such as N-heterocyclic carbenes(NHCs),which not only stabilize the actual catalytic active species facilitating the transformations,but also provide additional control over the selectivity of *** this context,NHCs-ligated palladacycles(NHCP_(dcycles))with different electronic and steric properties have been synthesized and applied as green precatalysts(high stability and activity,low catalyst loading and mild reaction conditions)to accelerate transition metalcatalyzed ***,this review focuses mainly on the strategy of NHC-Pd_(cycles) design and catalytic results obtained from representative transition metal catalysis,such as Suzuki-Miyaura,Heck-Mizoroki and Sonogashira cross-coupling reactions,Buchwald-Hartwig amination,carbonylation as well as *** last,the current limitations and potential trends for further development of NHC-Pdcycles are also highlighted.

关键词： N-Heterocyclic carbene palladacycle Precatalyst Cross-coupling reaction Transition metal catalysis

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