Catalytic Performance of a Phosphapalladacycle Bearing a Biphenyl Moiety, Possessing an sp3C−Pd Bond, toward the Heck Coupling Reaction

2009 ◽  
Vol 28 (21) ◽  
pp. 6281-6287 ◽  
Author(s):  
Shirin Nadri ◽  
Mohammad Joshaghani ◽  
Ezzat Rafiee
Keyword(s):  
Coupling Reaction ◽  
Catalytic Performance ◽  
Heck Coupling

scholarly journals Mesoporous Palladium N,N’-Bis(3-Allylsalicylidene)o-Phenylenediamine-Methyl Acrylate Resins as Heterogeneous Catalysts for the Heck Coupling Reaction

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2612
Author(s):  
Claudio Mella ◽  
Cecilia C. Torres ◽  
Gina Pecchi ◽  
Cristian H. Campos
Keyword(s):  
Methyl Acrylate ◽  
Heterogeneous Catalysts ◽  
Suspension Polymerization ◽  
Metal Chelate ◽  
Reaction Medium ◽  
Coupling Reaction ◽  
Analytical Techniques ◽  
Catalytic Performance ◽  
Catalyst Stability ◽  
Heck Coupling

Palladium N,N’-bis(3-allylsalicylidene)o-phenylenediamine complex (PdAS) immobilized onto mesoporous polymeric methyl acrylate (MA) based resins (PdAS(x)-MA, x = 1, 2, 5, or 10 wt.%) were successfully prepared as heterogeneous catalysts for the Heck reaction. The catalysts were synthesized via radical suspension polymerization using PdAS as a metal chelate monomer, divinylbenzene and MA as co-monomers. The effect of the PdAS(x) content on the physicochemical properties of the resins is also reported. The catalysts were characterized by using a range of analytical techniques. The large surface area (>580 m2·g−1) and thermal stability (up to 250 °C) of the PdAS(x)-MA materials allows their application as catalysts in the C–C coupling reaction between iodobenzene and MA in the presence of trimethylamine at 120 °C using DMF as the solvent. The PdAS(10)-MA catalyst exhibited the highest catalytic performance with no significant catalytic loss being observed after five reuses, thereby indicating excellent catalyst stability in the reaction medium.

Magnetically recyclable Pd/γ-AlOOH@Fe3O4 catalysts and their catalytic performance for the Heck coupling reaction

2014 ◽  
Vol 57 (6) ◽  
pp. 866-872 ◽  
Author(s):  
Hao Yang ◽  
ShengFu Ji ◽  
XueFei Liu ◽  
DanNi Zhang ◽  
Da Shi
Keyword(s):  
Coupling Reaction ◽  
Catalytic Performance ◽  
Heck Coupling

Catalytic performance study of nano-cobalt: a catalyst for complement to the Heck coupling reaction

2017 ◽  
Vol 24 (4) ◽  
pp. 1095-1103 ◽  
Author(s):  
K. S. Jithendra Kumara ◽  
G. Krishnamurthy ◽  
B. E. Kumara Swamy ◽  
N. Sunil Kumar ◽  
Mohan Kumar
Keyword(s):  
Coupling Reaction ◽  
Catalytic Performance ◽  
Heck Coupling ◽  
Performance Study

A mesoporous “shell-in-shell” structured nanocatalyst with large surface area, enhanced synergy, and improved catalytic performance for Suzuki–Miyaura coupling reaction

2014 ◽  
Vol 50 (82) ◽  
pp. 12356-12359 ◽  
Author(s):  
Baocang Liu ◽  
Yuefang Niu ◽  
Yan Li ◽  
Fan Yang ◽  
Jiamin Guo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Coupling Reaction ◽  
Catalytic Performance ◽  
Large Surface Area ◽  
Mesoporous Shell

A novel mesoporous “shell-in-shell” structured nanoreactor (@Pd/meso-TiO2/Pd@meso-SiO2) shows superior catalytic activity, stability, and selectivity for Suzuki–Miyaura coupling reaction.

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.

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