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.

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.

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
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