Magnetic Fe3O4 nanoparticles: Efficient and recoverable nanocatalyst for the synthesis of polyhydroquinolines and Hantzsch 1,4-dihydropyridines under solvent-free conditions

2014 ◽  
Vol 382 ◽  
pp. 99-105 ◽  
Author(s):  
Masoud Nasr-Esfahani ◽  
S. Jafar Hoseini ◽  
Morteza Montazerozohori ◽  
Rasool Mehrabi ◽  
Hasan Nasrabadi
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

Preparation of polydopamine sulfamic acid-functionalized magnetic Fe3O4 nanoparticles with a core/shell nanostructure as heterogeneous and recyclable nanocatalysts for the acetylation of alcohols, phenols, amines and thiols under solvent-free conditions

2016 ◽  
Vol 18 (23) ◽  
pp. 6337-6348 ◽  
Author(s):  
Hojat Veisi ◽  
Sepideh Taheri ◽  
Saba Hemmati
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Sulfonic Acid ◽  
Sulfamic Acid ◽  
Solvent Free ◽  
Core Shell ◽  
Solvent Free Conditions ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Sulfonic Acid Groups ◽  
Magnetic Fe3o4

The loading of sulfonic acid groups on the surface of PDA-encapsulated Fe3O4 nanoparticles is proposed to fabricate a core–shell Fe3O4@PDA-SO3H nanocatalyst.

Application of polydopamine sulfamic acid-functionalized magnetic Fe3O4 nanoparticles (Fe3O4@PDA-SO3H) as a heterogeneous and recyclable nanocatalyst for the formylation of alcohols and amines under solvent-free conditions

2017 ◽  
Vol 41 (12) ◽  
pp. 5075-5081 ◽  
Author(s):  
Sepideh Taheri ◽  
Hojat Veisi ◽  
Malak Hekmati
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Sulfamic Acid ◽  
Ethyl Formate ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Highly Effective ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

Herein, a highly effective and solvent-free Fe3O4@PDA-SO3H catalyzed technique was advanced for N-formylation of alcohols, phenols and amines with ethyl formate.

Chlorosulfonic Acid Supported Piperidine-4-carboxylic Acid (PPCA) Functionalized Fe3O4 Nanoparticles (Fe3O4-PPCA): The Efficient, Green and Reusable Nanocatalyst for the Synthesis of Pyrazolyl Coumarin Derivatives under Solvent-Free Conditions

2019 ◽  
Vol 22 (2) ◽  
pp. 123-128
Author(s):  
Setareh Habibzadeh ◽  
Hassan Ghasemnejad-Bosra ◽  
Mina Haghdadi ◽  
Soheila Heydari-Parastar
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
High Efficiency ◽  
Reaction Times ◽  
Chlorosulfonic Acid ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Solvent Free Conditions

Background: In this study, we developed a convenient methodology for the synthesis of coumarin linked to pyrazolines and pyrano [2,3-h] coumarins linked to 3-(1,5-diphenyl-4,5- dihydro-1H-pyrazol-3-yl)-chromen-2-one derivatives using Chlorosulfonic acid supported Piperidine-4-carboxylic acid (PPCA) functionalized Fe3O4 nanoparticles (Fe3O4-PPCA) catalyst. Materials and Methods:: Fe3O4-PPCA was investigated as an efficient and magnetically recoverable Nanocatalyst for the one-pot synthesis of substituted coumarins from the reaction of coumarin with a variety of aromatic aldehydes in high to excellent yield at room temperature under solvent-free conditions. The magnetic nanocatalyst can be easily recovered by applying an external magnet device and reused for at least 10 reaction runs without considerable loss of reactivity. Results and Conclusion: The advantages of this protocol are the use of commercially available materials, simple and an inexpensive procedure, easy separation, and an eco-friendly procedure, and it shows good reaction times, good to high yields, inexpensive and practicability procedure, and high efficiency.

Design of SiO2/aminopropylsilane-modified magnetic Fe3O4 nanoparticles for doxorubicin immobilization

2021 ◽  
Vol 70 (5) ◽  
pp. 987-994
Author(s):  
A. M. Demin ◽  
A. V. Vakhrushev ◽  
M. S. Valova ◽  
A. S. Minin ◽  
D. K. Kuznetsov ◽  
...  
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

Preparation and Properties of Fe3O4/PMMA Nanocomposite Films

2009 ◽  
Vol 79-82 ◽  
pp. 505-508
Author(s):  
Li Li ◽  
H. Zhao ◽  
Wei Wang ◽  
F.F. Nie
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Chemical Structure ◽  
Silane Coupling Agent ◽  
Blood Compatibility ◽  
Nanocomposite Films ◽  
Precipitation Process ◽  
Silane Coupling ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Co Precipitation ◽  
Magnetic Fe3o4

The magnetic Fe3O4 nanoparticles had been synthesized by co-precipitation process and surface treatment by silane coupling agent (KH570). The magnetic Fe3O4/PMMA nanocomposite films were prepared by blend method, and the chemical structure, mechanical properties, surface morphology and the biocompatibility of the nanocomposite films were studied in this work. The magnetic Fe3O4 nanoparticles were well dispersed in the Fe3O4/PMMA nanocomposite films. The strength of the nanocomposite films, as well as the strain, decreased first and then increased with the increasing of the nanoparticles. The hemolytic ratio indicated that the nanocomposite films had a better blood compatibility.

Use of Magnetic Fe3O4 Nanoparticles Coated with Bovine Serum Albumin for the Separation OF Lysozyme from Chicken Egg white

2021 ◽  
pp. 129442
Author(s):  
Mariane Gonçalves Santos ◽  
Diailison Teixeira de Carvalho ◽  
Lucas Belga Caminitti ◽  
Bruna Bueno Alves de Lima ◽  
Marcello Henrique da Silva Cavalcanti ◽  
...  
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Fe3o4 Nanoparticles ◽  
Bovine Serum ◽  
Egg White ◽  
Chicken Egg ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4
Sign in / Sign up

Export Citation Format

Share Document