Application of magnetic Fe3O4 nanoparticles as a reusable heterogeneous catalyst in the synthesis of β-lactams containing amino groups

2019 ◽  
Vol 43 (32) ◽  
pp. 12690-12697 ◽  
Author(s):  
Aleme Moslehi ◽  
Maaroof Zarei
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Fe3o4 Nanoparticles ◽  
Amino Groups ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

The catalytic activity of magnetic Fe3O4 nanoparticles to promote the reduction of β-lactams containing nitroaryl groups to β-lactams containing aminoaryl groups in ethanol was reported. This methodology is convenient and green.

scholarly journals Improved Catalytic Properties of Thermomyces lanuginosus Lipase Immobilized onto Newly Fabricated Polydopamine-Functionalized Magnetic Fe3O4 Nanoparticles

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 629 ◽  
Author(s):  
Yanhong Bi ◽  
Zhaoyu Wang ◽  
Rui Zhang ◽  
Yihan Diao ◽  
Yaoqi Tian ◽  
...  
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Thermomyces Lanuginosus ◽  
Solvent Tolerance ◽  
Amino Groups ◽  
Reaction Conditions ◽  
Thermomyces Lanuginosus Lipase ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Characterization Studies ◽  
Magnetic Fe3o4 ◽  
Temperature Adaptability

In this study, magnetic Fe3O4 nanoparticles coated with polydopamine possessing abundant amino groups (Fe3O4@PDA) were conveniently prepared, detailed, and characterized, and then firstly used as a supporting matrix for immobilizing Thermomyces lanuginosus lipase (Fe3O4@PDA@TLL). The effects of some crucial factors on the immobilization efficiency were investigated and the optimal protein loading and activity recovery were found to be 156.4 mg/g and 90.9%, respectively. Characterization studies revealed that Fe3O4@PDA@TLL displayed a broader pH and temperature adaptability as compared to the free TLL, which allows its use at wider ranges of reaction conditions. With regard to the stabilities, the immobilized TLL clearly displayed improved pH, thermal, and solvent tolerance stabilities compared to the free enzyme, suggesting that the biocompatible Fe3O4@PDA might be an outstanding material for immobilizing TLL and acting as alternative support for different enzymes.

N-Propyl benzoguanamine sulfonic acid supported on magnetic Fe3O4 nanoparticles: a novel and efficient magnetically heterogeneous catalyst for the synthesis of 1,8-dioxo-decahydroacridine derivatives

2018 ◽  
Vol 42 (1) ◽  
pp. 327-335 ◽  
Author(s):  
Masoumeh Gholami Dehbalaei ◽  
Naser Foroughifar ◽  
Hoda Pasdar ◽  
Alireza Khajeh-Amiri
Keyword(s):  
Heterogeneous Catalyst ◽  
Fe3o4 Nanoparticles ◽  
Sulfonic Acid ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

An MNPs-N-propyl-benzoguanamine-SO3H nanocatalyst as a novel, retrievable, economic and heterogeneous catalyst is prepared for the synthesis of 1,8-dioxo-decahydroacridine derivatives.

Catalytic oxidation of 4-chlorophenol with magnetic Fe3O4 nanoparticles: mechanisms and particle transformation

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 66927-66933 ◽  
Author(s):  
Rong Cheng ◽  
Guan-qing Li ◽  
Can Cheng ◽  
Lei Shi ◽  
Xiang Zheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Fe3o4 Nanoparticles ◽  
High Catalytic Activity ◽  
Magnetic Fe3o4 Nanoparticles ◽  
Magnetic Fe3o4

Nanosized Fe3O4 showed high catalytic activity even after being used several times, and reactive sites on surface increased resulted in the higher activity of particles. ˙OH produced during reaction was the main cause for degradation of 4-CP.

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.

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