Synthesis of Imidazole and Theophylline Derivatives Incorporating Pyrimidine-Fused Heterocycles Using Magnetic Nanoparticles-Supported Tungstic Acid (MNP-TA) Catalyst

Masoumeh Divar; Farhad Panahi; Sayedeh Rojin Shariatipour; Ali Khalafi-Nezhad

doi:10.1002/jhet.2639

Synthesis of Imidazole and Theophylline Derivatives Incorporating Pyrimidine-Fused Heterocycles Using Magnetic Nanoparticles-Supported Tungstic Acid (MNP-TA) Catalyst

Journal of Heterocyclic Chemistry ◽

10.1002/jhet.2639 ◽

2016 ◽

Vol 54 (1) ◽

pp. 660-669 ◽

Cited By ~ 6

Author(s):

Masoumeh Divar ◽

Farhad Panahi ◽

Sayedeh Rojin Shariatipour ◽

Ali Khalafi-Nezhad

Keyword(s):

Magnetic Nanoparticles ◽

Tungstic Acid ◽

Fused Heterocycles ◽

Theophylline Derivatives

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Synthesis of some quinazolinone derivatives using magnetic nanoparticles-supported tungstic acid as antimicrobial agents

Journal of the Iranian Chemical Society ◽

10.1007/s13738-018-1337-8 ◽

2018 ◽

Vol 15 (7) ◽

pp. 1457-1466 ◽

Cited By ~ 6

Author(s):

Masoumeh Divar ◽

Kamiar Zomorodian ◽

Sorayya Bastan ◽

Somayeh Yazdanpanah ◽

Soghra Khabnadideh

Keyword(s):

Magnetic Nanoparticles ◽

Antimicrobial Agents ◽

Tungstic Acid ◽

Quinazolinone Derivatives

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Magnetic nanoparticles-supported tungstic acid (MNP-TA): an efficient magnetic recyclable catalyst for the one-pot synthesis of spirooxindoles in water

RSC Advances ◽

10.1039/c4ra12976h ◽

2015 ◽

Vol 5 (3) ◽

pp. 2223-2230 ◽

Cited By ~ 33

Author(s):

Ali Khalafi-Nezhad ◽

Masoumeh Divar ◽

Farhad Panahi

Keyword(s):

Magnetic Nanoparticles ◽

Tungstic Acid ◽

Recyclable Catalyst ◽

One Pot ◽

One Pot Synthesis ◽

Catalytic Application ◽

Magnetically Separable Catalyst ◽

Magnetically Separable ◽

The One ◽

Magnetic Recyclable

This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.

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Nanoarmoring of Enzymes with Carbon Nanotubes and Magnetic Nanoparticles

10.1016/s0076-6879(20)x0002-4 ◽

2020 ◽

Keyword(s):

Carbon Nanotubes ◽

Magnetic Nanoparticles

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Thermal Conductivity of Nanofluid with Magnetic Nanoparticles

PIERS Online ◽

10.2529/piers080904124024 ◽

2009 ◽

Vol 5 (3) ◽

pp. 231-234 ◽

Cited By ~ 12

Author(s):

Tsung-Han Tsai ◽

Long-Sheng Kuo ◽

Ping-Hei Chen ◽

Chin-Ting Yang

Keyword(s):

Thermal Conductivity ◽

Magnetic Nanoparticles

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Ferromagnetic Resonance Biosensor for Homogeneous and Volumetric Detection of DNA

10.26434/chemrxiv.5662315.v1 ◽

2017 ◽

Author(s):

Bo Tian ◽

Peter Svedlindh ◽

Mattias Strömberg ◽

Erik Wetterskog

Keyword(s):

Magnetic Nanoparticles ◽

Ferromagnetic Resonance ◽

Limit Of Detection ◽

Point Of Care ◽

Rolling Circle Amplification ◽

Resonance Field ◽

Isothermal Amplification ◽

Detection Sensitivity ◽

Serum Samples ◽

Rolling Circle

In this work, we demonstrate for the first time, a ferromagnetic resonance (FMR) based homogeneous and volumetric biosensor for magnetic label detection. Two different isothermal amplification methods, i.e., rolling circle amplification (RCA) and loop-mediated isothermal amplification (LAMP) are adopted and combined with a standard electron paramagnetic resonance (EPR) spectrometer for FMR biosensing. For RCA-based FMR biosensor, binding of RCA products of a synthetic Vibrio cholerae target DNA sequence gives rise to the formation of aggregates of magnetic nanoparticles. Immobilization of nanoparticles within the aggregates leads to a decrease of the net anisotropy of the system and a concomitant increase of the resonance field. A limit of detection of 1 pM is obtained with an average coefficient of variation of 0.16%, which is superior to the performance of other reported RCA-based magnetic biosensors. For LAMP-based sensing, a synthetic Zika virus target oligonucleotide is amplified and detected in 20% serum samples. Immobilization of magnetic nanoparticles is induced by their co-precipitation with Mg2P2O7 (a by-product of LAMP) and provides a detection sensitivity of 100 aM. The fast measurement, high sensitivity and miniaturization potential of the proposed FMR biosensing technology makes it a promising candidate for designing future point-of-care devices.

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