MCM-41-Immobilised Nitrogen and Sulfur Mixed Tridentate Palladium(0) Complex: A Highly Efficient and Recyclable Catalyst for the Suzuki Reaction of Aryl Bromides in Air

2017 ◽  
Vol 41 (3) ◽  
pp. 186-191 ◽  
Author(s):  
Dayi Liu ◽  
Pingping Wang ◽  
Jingting Ai ◽  
Mingzhong Cai
Keyword(s):  
Hydrazine Hydrate ◽  
Active Catalyst ◽  
Suzuki Reaction ◽  
Significant Loss ◽  
Recyclable Catalyst ◽  
The Novel ◽  
Highly Efficient ◽  
Highly Active ◽  
Aryl Bromides ◽  
Mcm 41

The novel MCM-41-immobilised nitrogen and sulfur mixed tridentate palladium(0) complex [MCM-41-2N,S-Pd(0)] was prepared from 3-(2-aminoethylamino)propyltrimethoxysilane by immobilisation on MCM-41, followed by reaction with thiophene-2-carboxaldehyde and PdCl2 and then reduction with hydrazine hydrate. This phosphine-free heterogeneous palladium(0) complex was a highly active catalyst for the Suzuki reaction of aryl bromides in air and could be recycled at least 8 times without significant loss of activity.

Magnetic NiO nanoparticles confined within open ends MWCNTs: a novel and highly active catalyst for hydrogenation and synthesis of imines

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58805-58812 ◽  
Author(s):  
Gangquan Chen ◽  
Wenbin Gao ◽  
Xuejun Wang ◽  
Hongfei Huo ◽  
Wenzhu Li ◽  
...  
Keyword(s):  
Active Catalyst ◽  
The Novel ◽  
Nio Nanoparticles ◽  
Highly Active ◽  
Novel Catalyst

The novel catalyst is highly active for hydrogenation and synthesis of imines.

scholarly journals Studies on Pd/NiFe2O4 catalyzed ligand-free Suzuki reaction in aqueous phase: synthesis of biaryls, terphenyls and polyaryls

2011 ◽  
Vol 7 ◽  
pp. 310-319 ◽  
Author(s):  
Sanjay R Borhade ◽  
Suresh Babsaheb Waghmode
Keyword(s):  
Active Catalyst ◽  
Suzuki Reaction ◽  
Reaction Times ◽  
Coupling Reaction ◽  
Solvent Mixture ◽  
Phase Synthesis ◽  
Suzuki Coupling Reaction ◽  
Arylboronic Acids ◽  
Highly Active ◽  
Ligand Free

Palladium supported on nickel ferrite (Pd/NiF2O4) was found to be a highly active catalyst for the Suzuki coupling reaction between various aryl halides and arylboronic acids. The reaction gave excellent yields (70–98%) under ligand free conditions in a 1:1 DMF/H2O solvent mixture, in short reaction times (10–60 min). The catalyst could be recovered easily by applying an external magnetic field. The polyaryls were similarly synthesized.

Highly Efficient Heterogeneous Copper-Catalysed O-Arylation of Phenols by Nitroarenes Leading to Diaryl Ethers

2017 ◽  
Vol 41 (12) ◽  
pp. 725-729 ◽  
Author(s):  
Yingying Du ◽  
Fang Yao ◽  
Yuxin Tuo ◽  
Mingzhong Cai
Keyword(s):  
Copper Catalyst ◽  
Simple Procedure ◽  
Significant Loss ◽  
Diaryl Ethers ◽  
Highly Efficient ◽  
Reaction Solution ◽  
Mcm 41

The heterogeneous O-arylation of phenols by nitroarenes was achieved in DMF at 100 °C by using an MCM-41-immobilised bidentate nitrogen copper(II) complex [MCM-41-2N-Cu(OAc)2] as catalyst, yielding a variety of unsymmetrical diaryl ethers in good to excellent yields. This heterogeneous copper catalyst can be easily prepared by a simple procedure from commercially readily available and inexpensive reagents, recovered by filtration of the reaction solution and recycled at least seven times without significant loss of activity.

Biopolymer–metal complex wool–Pd as a highly active catalyst for Suzuki reaction in water

2012 ◽  
Vol 2 (11) ◽  
pp. 2291 ◽  
Author(s):  
Heng-chang Ma ◽  
Wei Cao ◽  
Zhi-kang Bao ◽  
Zi-Qiang Lei
Keyword(s):  
Metal Complex ◽  
Active Catalyst ◽  
Suzuki Reaction ◽  
Highly Active ◽  
Reaction In Water

Highly efficient catalytic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid with bimetallic Pt-Cu alloy nanoparticles catalyst

2022 ◽  
Author(s):  
Xiaomeng Cheng ◽  
Shaopeng Li ◽  
Shulin Liu ◽  
Xin Yu ◽  
Junjuan Yang ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Copper Alloy ◽  
Active Catalyst ◽  
Alloy Nanoparticles ◽  
Turnover Frequency ◽  
High Turnover ◽  
Highly Efficient ◽  
Highly Active ◽  
Cu Alloy ◽  
Furandicarboxylic Acid

Bimetallic platinum-copper alloy nanoparticles is a highly active catalyst for the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) under base-free conditions, with a high turnover frequency up to 135...

A Highly Efficient and Recyclable Pd(Pph3)4/Peg-400 System for Stille Cross-Coupling Reactions of Organostannanes with Aryl Bromides

2017 ◽  
Vol 41 (9) ◽  
pp. 547-550
Author(s):  
Xue Huang ◽  
Fang Yao ◽  
Ting Wei ◽  
Mingzhong Cai
Keyword(s):  
Petroleum Ether ◽  
Cross Coupling ◽  
Significant Loss ◽  
Organotin Compounds ◽  
Coupling Reactions ◽  
Efficient Catalyst ◽  
Peg 400 ◽  
Highly Efficient ◽  
Cross Coupling Reactions ◽  
Aryl Bromides

Pd(PPh3)4 in PEG-400 is shown to be a highly efficient catalyst for the Stille cross-coupling reactions of various organotin compounds with aryl bromides. The reaction could be conducted at 80 °C using NaOAc as base, yielding a variety of biaryls, alkynes and alkenes in good to excellent yields. The isolation of the products was readily performed by extraction with petroleum ether and the Pd(PPh3)4/PEG-400 system could be easily recycled and reused five times without any significant loss of activity.

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