Pd(II) salen complex covalently anchored to multi-walled carbon nanotubes as a heterogeneous and reusable precatalyst for Mizoroki-Heck and Hiyama cross-coupling reactions

2014 ◽  
Vol 29 (1) ◽  
pp. 40-44 ◽  
Author(s):  
Barahman Movassagh ◽  
Fatemeh S. Parvis ◽  
Mozhgan Navidi
Keyword(s):  
Carbon Nanotubes ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Salen Complex ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Nickel-Fe3O4 Magnetic Nanoparticles Supported on Multiwalled Carbon Nanotubes: Effective Catalyst in Suzuki Cross Coupling Reactions

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 495
Author(s):  
Sojeong K. Folsom ◽  
Destiny J. Ivey ◽  
Frank S. McNair ◽  
Ali R. Siamaki
Keyword(s):  
Carbon Nanotubes ◽  
Fe3o4 Nanoparticles ◽  
Nickel Nanoparticles ◽  
Cross Coupling ◽  
Conventional Heating ◽  
Coupling Reactions ◽  
X Ray ◽  
Cross Coupling Reactions ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Nickel-Fe3O4 nanoparticles supported on multi-walled carbon nanotubes (Ni-Fe3O4/MWCNTs) were synthesized by mechanical grinding of a sample of nickel salt, Fe3O4 and MWCNTs using a ball-mill mixer. The preparation method allows for bulk production of Ni-Fe3O4 nanoparticles at room temperature without the necessity of any solvent or chemical reagent. The nanoparticles prepared by this method exhibit small particles size of 5–8 nm with uniform dispersion of nickel nanoparticles on the surface of multi-walled carbon nanotubes. The Ni-Fe3O4/MWCNTs demonstrated remarkable catalytic activity for Suzuki cross coupling reactions of functionalized aryl halides and phenylboronic acids with excellent turnover number and turnover frequency (e.g., 76,000 h−1) using Monowave 50 conventional heating reactor at 120 °C within a very short reaction time of 15 min. The catalyst is air-stable and exhibits easy removal from the reaction mixture due to its magnetic properties, recyclability with no loss of activity, and significantly better performance than the other well-known commercial nickel catalyst. The Ni-Fe3O4/MWCNTs nanoparticles were fully characterized by a variety of spectroscopic techniques including X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS). Since nickel offers similar properties to other more expensive transition metals including the most widely used palladium counterpart in cross coupling catalysis, this work demonstrates a promising lower-cost, air-moisture stable and efficient alternative catalyst based on nickel nanoparticles for cross coupling reactions.

PdII Immobilized on Ferromagnetic Multi-Walled Carbon Nanotubes Functionalized by Aminated 2-Chloroethylphosphonic Acid with S-Methylisothiourea (FMMWCNTs@CPA@SMTU@PdII NPs) Applied as a Highly Efficient and Recyclable Nanostructured Catalyst for Suzuki–Miyaura and Mizoroki–Heck Cross-Coupling Reactions in Solvent-Free Conditions

2019 ◽  
Vol 72 (9) ◽  
pp. 674 ◽  
Author(s):  
Maryam Sadat Ghasemzadeh ◽  
Batool Akhlaghinia
Keyword(s):  
Catalytic Activity ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Reaction Conditions ◽  
Cross Coupling Reactions ◽  
Solvent Free Conditions ◽  
Wide Range ◽  
Multi Walled Carbon Nanotubes ◽  
Catalyst Reusability ◽  
Walled Carbon Nanotubes

The new ferromagnetic nanostructured FMMWCNTs@CPA@SMTU@PdII NPs (IV) as an eco-friendly heterogeneous nanocatalyst with a particle size of ~20–30nm reported earlier by our group has been found to be very effective for Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions at ambient temperature. The procedure has been applied for a wide range of aryl halides, arylboronic acids, and alkenes. The magnetic separation by an external magnetic field, mild reaction conditions, and catalyst reusability up to four times without significant decrease in catalytic activity (reduced catalytic activity from 11 to 18% in the fifth, sixth, and seventh cycles) made the present method sustainable and economically viable for C–C cross-coupling reactions.

CuCl heterogenized on metformine-modified multi walled carbon nanotubes as a recyclable nanocatalyst for Ullmann-type C–O and C–N coupling reactions

2018 ◽  
Vol 42 (4) ◽  
pp. 2782-2789 ◽  
Author(s):  
Elham Akhavan ◽  
Saba Hemmati ◽  
Malak Hekmati ◽  
Hojat Veisi
Keyword(s):  
Carbon Nanotubes ◽  
Synthesis Method ◽  
Coupling Reactions ◽  
Covalent Grafting ◽  
Multi Walled Carbon Nanotubes ◽  
Type C ◽  
Walled Carbon Nanotubes

Herein, a novel MWCNTs-Met/CuCl nanocatalyst synthesis method by metformine covalent grafting on the surface of carbon nanotubes and subsequent coordination with a CuCl catalyst is described.

Palladium NPs supported on novel imino-pyridine-functionalized MWCNTs: efficient and highly reusable catalysts for the Suzuki–Miyaura and Sonogashira coupling reactions

2016 ◽  
Vol 40 (6) ◽  
pp. 4945-4951 ◽  
Author(s):  
Mehdi Adib ◽  
Rahman Karimi-Nami ◽  
Hojat Veisi
Keyword(s):  
Carbon Nanotubes ◽  
Coupling Reactions ◽  
Sonogashira Coupling ◽  
Heterogeneous Nanocatalyst ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Functionalized Mwcnts

In this article a new heterogeneous nanocatalyst based on palladium supported on functionalized multi-walled carbon nanotubes (MWCNTs) has been introduced.

scholarly journals Palladium nanoparticles on carbon nanotubes as catalysts of cross-coupling reactions

2013 ◽  
Vol 1 (31) ◽  
pp. 8737 ◽  
Author(s):  
Benedetta Cornelio ◽  
Graham A. Rance ◽  
Marie Laronze-Cochard ◽  
Antonella Fontana ◽  
Janos Sapi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Palladium Nanoparticles ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions
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