Nature of the Copper-Oxide-Mediated C–S Cross-Coupling Reaction: Leaching of Catalytically Active Species from the Metal Oxide Surface

ACS Catalysis ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 3637-3643 ◽  
Author(s):  
Yulia S. Panova ◽  
Alexey S. Kashin ◽  
Maxim G. Vorobev ◽  
Evgeniya S. Degtyareva ◽  
Valentine P. Ananikov
Keyword(s):  
Metal Oxide ◽  
Copper Oxide ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Active Species ◽  
Oxide Surface ◽  
Metal Oxide Surface ◽  
Cross Coupling Reaction ◽  
Catalytically Active

Metallic palladium, PdO, and palladium supported on metal oxides for the Suzuki–Miyaura cross-coupling reaction: a unified view of the process of formation of the catalytically active species in solution

2017 ◽  
Vol 7 (18) ◽  
pp. 3934-3951 ◽  
Author(s):  
Alessandro Del Zotto ◽  
Daniele Zuccaccia
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Active Species ◽  
Cross Coupling Reaction ◽  
Metallic Palladium ◽  
Catalytically Active ◽  
Unified View ◽  
Supported Pd

The nature of the true catalytic species in the Suzuki–Miyaura coupling starting from metallic palladium, PdO, and metal oxide-supported Pd is critically reviewed.

Thieme Chemistry Journals Awardees – Where Are They Now? Synthesis of a Dinuclear Copper NHC Complex Bearing a Rigid π-Conjugated Cyclic Framework

Synlett ◽  
2017 ◽  
Vol 28 (14) ◽  
pp. 1775-1779
Author(s):  
Daiki Inamori ◽  
Takuya Miwa ◽  
Tetsuaki Fujihara ◽  
Yasushi Tsuji ◽  
Jun Terao
Keyword(s):  
Active Sites ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Dinuclear Complexes ◽  
Homogeneous Catalysts ◽  
Dinuclear Copper ◽  
Cross Coupling Reaction ◽  
Catalytically Active

Macrocyclic dinuclear complexes have been gaining popularity in the design of homogeneous catalysts. Herein, we report the design of such a complex featuring catalytically active sites fixed inside the ring and its synthesis using a cross-coupling reaction.

scholarly journals Hollow-Shell-Structured Mesoporous Silica-Supported Palladium Catalyst for an Efficient Suzuki-Miyaura Cross-Coupling Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 582
Author(s):  
Abdulelah Taher Ali Mohammed ◽  
Lijian Wang ◽  
Ronghua Jin ◽  
Guohua Liu ◽  
Chunxia Tan
Keyword(s):  
Chemical Engineering ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Cost Effective ◽  
Active Species ◽  
Palladium Acetate ◽  
Hollow Shell ◽  
Electron Microscopies ◽  
Cross Coupling Reaction ◽  
The Cost

The construction of a high stability heterogeneous catalyst for privileged common catalysis is a benefit in regard to reuse and separation. Herein, a palladium diphenylphosphine-based hollow-shell-structured mesoporous catalyst (HS@PdPPh2@MSN) was prepared by immobilizing bis((diphenylphosphino)ethyltriethoxysilane)palladium acetate onto the inner wall of a mesoporous organicsilicane hollow shell, whose surface was protected by a –Si(Me)3 group. Electron microscopies confirmed its hollow-shell-structure, and structural analyses and characterizations revealed its well-defined single-site active species within the silicate network. As presented in this study, the newly constructed HS@PdPPh2@MSN enabled an efficient Suzuki-Miyaura cross-coupling reaction for varieties of substrates with up to 95% yield in mild conditions. Meanwhile, it could be reused at least five times with good activity, indicating its excellent stability and recyclability. Furthermore, the cost-effective and easily synthesized HS@PdPPh2@MSN made it a good candidate for employment in fine chemical engineering.

scholarly journals Microwave-assisted synthesis of palladium nanoparticles supported on copper oxide in aqueous medium as an efficient catalyst for Suzuki cross-coupling reaction

2018 ◽  
Vol 36 (5-6) ◽  
pp. 1352-1365 ◽  
Author(s):  
Hany A Elazab ◽  
M.A. Sadek ◽  
Tamer T El-Idreesy
Keyword(s):  
Catalytic Activity ◽  
Copper Oxide ◽  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Microwave Assisted Synthesis ◽  
Synthetic Approach ◽  
Efficient Catalyst ◽  
Microwave Assisted ◽  
Cross Coupling Reaction

We report here a reliable green method for the synthesis of palladium nanoparticles supported on copper oxide as a highly active and efficient catalyst for Suzuki cross-coupling reaction. The experimental synthetic approach is based on microwave-assisted chemical reduction of an aqueous mixture of palladium and copper salt simultaneously using hydrazine hydrate as reducing agent. The catalyst was fully characterized using various techniques showing well-dispersed palladium nanoparticles. The catalytic activity and recyclability of the prepared catalyst were experimentally explored in the ligand-free Suzuki cross-coupling reaction with a diverse series of functionalized substrates. The synthesized Pd/CuO catalyst shows many advantages beside its high catalytic efficiency such as the recyclability of up to five times with negligible loss of catalytic activity, short reaction times, use of environmentally benign solvent systems, and mild reaction conditions.

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