N-Heterocyclic Carbene Sulfonamide Palladium Complexes and Their Catalytic Activities in Suzuki−Miyaura Coupling Reaction

2008 ◽  
Vol 27 (4) ◽  
pp. 753-757 ◽  
Author(s):  
Tao Zhang ◽  
Wenfeng Wang ◽  
Xingxing Gu ◽  
Min Shi
Keyword(s):  
Coupling Reaction ◽  
Palladium Complexes ◽  
Catalytic Activities

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...

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.

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

Synthesis and Characterization of Novel PEPPSI type Pd–BICAAC Complexes

2022 ◽  
Author(s):  
Márton Nagyházi ◽  
Balázs Almási ◽  
Ádám Lukács ◽  
Attila Bényei ◽  
Tibor Nagy ◽  
...  
Keyword(s):  
High Activity ◽  
Coupling Reaction ◽  
Kinetic Studies ◽  
Elemental Mercury ◽  
Palladium Complexes ◽  
Synthesis And Characterization ◽  
Heck Coupling ◽  
Moisture Resistant

A series of bicyclic alkylamino carbenes (BICAAC) (where N-aryl = dipp, mes, 2,6-dimethyl-4-(dimethylamino)phenyl, 5a-d) and their novel air- and moisture-resistant pyridine (pyridine, 4 dimethylaminopyridine) containing palladium PEPPSI-type Pd(II) complexes (6a-e) were synthetized and characterized. The new palladium complexes have shown high activity in Mizoroki–Heck coupling reaction even at as low as 100 ppm loading (TON up to 10000). Kinetic studies revealed that reactions carried out in the presence of elemental mercury resulted in decrease in activity. It indicates that the coupling reaction may have both molecular and Pd(0)-mediated catalytic paths.

scholarly journals A Quantum-Chemical DFT Approach to Elucidation of the Chirality Transfer Mechanism of the Enantioselective Suzuki–Miyaura Cross-Coupling Reaction

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Radomir Jasiński ◽  
Oleg M. Demchuk ◽  
Dmytro Babyuk
Keyword(s):  
Quantum Chemical ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Palladium Complexes ◽  
Initial Reaction ◽  
Chiral Ligand ◽  
Chirality Transfer ◽  
Cross Coupling Reaction ◽  
Enantioselective Reactions ◽  
Selection Of

The DFT calculations of the simplified model of the asymmetric Suzuki–Miyaura coupling reaction were performed at the M062x/LANL2DZ theory level at first. It was found that enantioselective reactions mediated by the palladium complexes of chiral C,P-ligands follow a four-stage mechanism similar to that proposed previously as one of the most credible mechanisms. It should be underlined that the presence of substituents in the substrates and the chiral ligand at ortho positions determines the energies of possible diastereoisomeric transition states and intermediates in initial reaction steps. This suggests that, in practice, a sharp selection of theoretically possible paths of chirality transfer from the catalyst to the product should have a place and, therefore, the absolute configuration of the formed atropisomeric product is defined and can be predicted.

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