Palladium nanoparticles supported on a carbazole functionalized mesoporous organic polymer: synthesis and their application as efficient catalysts for the Suzuki–Miyaura cross coupling reaction

2017 ◽  
Vol 8 (9) ◽  
pp. 1488-1494 ◽  
Author(s):  
Hui Zhou ◽  
Chuanguang Wu ◽  
Qiaolin Wu ◽  
Bixuan Guo ◽  
Wanting Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
High Performance ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Polymer Synthesis ◽  
Organic Polymer ◽  
Cross Coupling Reaction ◽  
Good Catalytic Activity

Pd nanoparticles supported on a carbazole functionalized mesoporous organic polymer exhibit high performance in the Suzuki–Miyaura cross coupling reaction with good catalytic activity, substrate adaptability and recyclability.

scholarly journals SCREENING OF THE CATALYTIC ACTIVITY OF Pd0 AND Pd2+- SUPPORTED ON CHITOSAN BEADS AND CRYOGELS

2018 ◽  
Vol XXIII ◽  
pp. 149-158
Author(s):  
Aleksandr Pestov ◽  
Aleksandr Mekhaev ◽  
Yuliya Privar ◽  
Natalya Prokuda ◽  
Evgeniy Modin ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
High Catalytic Activity ◽  
Mesomeric Effect ◽  
Catalytic Systems ◽  
Chitosan Beads ◽  
Cross Coupling Reaction ◽  
Significant Difference

Here, we report the results of screening of the catalytic activity of Pd-containing chitosan beads and cryogels in the cross-coupling reaction, hydrogenation of alkenes, nitro-, and carbonyl compounds and the hydrodechlorination of chlorophenols. Pd0-containing chitosan beads and cryogels show moderate catalytic activity in the reduction of alkenes and nitroaromatics. The conversion of nitroaromatics decreases for substrates with electron-withdrawing substituents, while the conversion of alkenes increases with the activation of carbon-carbon double bonds. For several substrates, a significant difference in kinetics and conversion degrees was observed for Pd nanoparticles supported on chitosan beads and cryogels. It was found that conversion in the hydrodechlorination reaction depends on substrate structure, being higher for substrates containing substituents with a positive mesomeric effect. Pd2+-chitosan catalysts showed high catalytic activity in cross-coupling (Heck reaction) offering the following advantages over known catalytic systems: lower reaction temperature, the selective functionalisation of C-I bonds, and the possibility to perform reactions with iodobenzene without base addition.

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.

Palladium nanoparticles supported on triazine functionalised mesoporous covalent organic polymers as efficient catalysts for Mizoroki–Heck cross coupling reaction

2014 ◽  
Vol 16 (9) ◽  
pp. 4223-4233 ◽  
Author(s):  
Pillaiyar Puthiaraj ◽  
Kasi Pitchumani
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Organic Polymers ◽  
Cross Coupling Reaction

A material based on palladium nanoparticles supported on nitrogen rich mesoporous covalent organic polymers exhibiting excellent catalytic activity towards Mizoroki–Heck cross coupling reaction.

Immobilizing biogenically synthesized palladium nanoparticles on cellulose support as a green and sustainable dip catalyst for cross-coupling reaction

Cellulose ◽  
2020 ◽  
Vol 27 (6) ◽  
pp. 3335-3357 ◽  
Author(s):  
Manjunatha Kempasiddaiah ◽  
Vishal Kandathil ◽  
Ramesh B. Dateer ◽  
B. S. Sasidhar ◽  
Shivaputra A. Patil ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Cross Coupling Reaction

scholarly journals Pd Nanoparticles Stabilized by Hypercrosslinked Polystyrene Catalyze Selective Triple C-C Bond Hydrogenation and Suzuki Cross-Coupling

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Linda Zh. Nikoshvili ◽  
Nadezhda A. Nemygina ◽  
Tatiana E. Khudyakova ◽  
Irina Yu. Tiamina ◽  
Alexey V. Bykov ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Aryl Halide ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Hypercrosslinked Polystyrene ◽  
Reductive Activation ◽  
Pd Nanoparticle ◽  
Cross Coupling Reaction ◽  
Precursor Decomposition

This paper describes the synthesis of Pd-containing catalysts based on nonfunctionalized hypercrosslinked polystyrene via impregnation with Pd acetate. Developed Pd nanoparticulate catalyst allowed achieving conversion of aryl halide up to 90% in Suzuki cross-coupling reaction under mild conditions and at the absence of phase-transfer agents. During the selective hydrogenation of triple C-C bond of 2-methyl-3-butyn-2-ol, up to 96% selectivity with respect to corresponding olefinic alcohol was found at 95% conversion. The influences of the procedure of catalyst synthesis like precursor decomposition and reductive activation method on Pd nanoparticle formation are discussed.

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