Dinuclear NHC–palladium complexes containing phosphine spacers: synthesis, X-ray structures and their catalytic activities towards the Hiyama coupling reaction

2014 ◽  
Vol 43 (19) ◽  
pp. 7166-7175 ◽  
Author(s):  
Jin Yang ◽  
Pinhua Li ◽  
Yicheng Zhang ◽  
Lei Wang
Keyword(s):  
Coupling Reaction ◽  
Palladium Complexes ◽  
X Ray ◽  
Catalytic Activities

Six dinuclear N-heterocyclic carbene–palladium complexes were synthesized from [Pd(μ-Cl)(Cl)(NHC)]2 and Ph2P(CH2)nPPh2, and their catalytic activities towards the Hiyama reaction were investigated.

Photoelectric properties for aromatic triangular tri-palladium complexes and their catalytic applications in Suzuki-Miyaura coupling reaction

2021 ◽  
Author(s):  
Xujun Li ◽  
Jia Li ◽  
Xiaoshuang Wang ◽  
lingang Wu ◽  
Yanlan Wang ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Palladium Complexes ◽  
Cyclic Voltammogram ◽  
Catalytic Activities ◽  
Photoelectric Properties ◽  
Catalytic Applications

The photoelectric properties and catalytic activities of substituted triphenylphosphine and sulfur/selenium ligands supported aromatic triangular tri-palladium complexes 1-4, abbreviated as [Pd3]+, were investigated. The cyclic voltammogram of [Pd3]+ in CH3CN-nBu4NPF6...

scholarly journals Poly(pyrazol-1-ylmethyl)benzene Palladium Complexes: Synthesis, Characterisation and Evaluation as Heck Coupling Catalysts

2007 ◽  
Vol 62 (3) ◽  
pp. 323-330 ◽  
Author(s):  
Nthabiseng M. Motsoane ◽  
Ilia A. Guzei ◽  
James Darkwa
Keyword(s):  
Structure Analysis ◽  
Coupling Reaction ◽  
Palladium Complexes ◽  
Heck Coupling ◽  
X Ray

The poly(pyrazol-1-ylmethyl)benzenes L1 - L5 react with [PdCl2(NCMe)2] or [PdClMe(COD)] to form dinuclear palladium complexes [{PdClX(3,5-Me2pzCH2)2-1,2-C6H4}2] (X = Cl (1), Me (2)), [{PdCl2(3,5-Me2pzCH2)2-1,3-C6H4}2] (3), palladium complexes [{Pd2(μ-Cl)2Me2(3,5- Me2pzCH2)2-1,3-C6H4}] (4), [{Pd2(μ-Cl)2X2(3,5-Me2pzCH2)2-1,4-C6H4}] (X = Cl (5), Me (6)), [{Pd2(μ-Cl)2Cl2(3,5-tBu2pzCH2)2-1,4-C6H4}] (7), and tetranuclear [{Pd2(μ-Cl)2Cl2(3,5- Me2pzCH2)2}2-1,4-C6H4] (8). The structures of 1, 2 and 8 were confirmed by X-ray structure analysis. The complexes efficiently catalyse the coupling reaction of iodobenzene and butylacrylate at 80 °C.

Photocatalytic activity of TiO2 synthesized by anodization and anodic spark deposition

MRS Advances ◽  
2020 ◽  
Vol 5 (61) ◽  
pp. 3141-3152
Author(s):  
Alma C. Chávez-Mejía ◽  
Génesis Villegas-Suárez ◽  
Paloma I. Zaragoza-Sánchez ◽  
Rafael Magaña-López ◽  
Julio C. Morales-Mejía ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Surface Characteristics ◽  
Amorphous Solids ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalytic Activities ◽  
Anodic Spark Oxidation ◽  
Porous Surfaces ◽  
Scanning Electron

AbstractSeveral photocatalysts, based on titanium dioxide, were synthesized by spark anodization techniques and anodic spark oxidation. Photocatalytic activity was determined by methylene blue oxidation and the catalytic activities of the catalysts were evaluated after 70 hours of reaction. Scanning Electron Microscopy and X Ray Diffraction analysis were used to characterize the catalysts. The photocatalyst prepared with a solution of sulfuric acid and 100 V presented the best performance in terms of oxidation of the dye (62%). The electric potential during the synthesis (10 V, low potential; 100 V, high potential) affected the surface characteristics: under low potential, catalyst presented smooth and homogeneous surfaces with spots (high TiO2 concentration) of amorphous solids; under low potential, catalyst presented porous surfaces with crystalline solids homogeneously distributed.

Synthesis, crystal structures and catalytic activities of palladium complexes with coumarin-functionalised N-heterocyclic carbene ligand0073

2021 ◽  
pp. 108755
Author(s):  
Ceren Akpunar ◽  
Namık Özdemir ◽  
Mert Olgun Karataş ◽  
Bülent Alıcı ◽  
İsmail Özdemir Resourches
Keyword(s):  
Crystal Structures ◽  
Palladium Complexes ◽  
Catalytic Activities

scholarly journals Stereoselective Convergent Synthesis of Carbon Skeleton of Cotylenin A Aglycone

Synthesis ◽  
2021 ◽  
Author(s):  
Kazuyuki Sugita ◽  
Motoi Kuwabara ◽  
Ami Matsuo ◽  
Shogo Kamo ◽  
Akinobu Matsuzawa
Keyword(s):  
Single Crystal ◽  
Aldol Reaction ◽  
Coupling Reaction ◽  
Carbon Skeleton ◽  
Convergent Synthesis ◽  
X Ray ◽  
Related Compounds

AbstractIn this paper, the synthesis of the carbon skeleton of cotylenin A aglycone is described. The key reactions, including an intramolecular aldol reaction, an aldol coupling reaction, and a ring-closing meta­thesis, allow for the effective and stereoselective access to the carbon skeleton of cotylenin A aglycone. The stereochemistry was confirmed by single-crystal X-ray crystallographic analyses of related compounds.

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