A novel and reusable magnetic nanocatalyst developed based on graphene oxide incorporated strontium nanoparticles for the facial synthesis of β-enamino ketones under solvent-free conditions

2018 ◽  
Vol 33 (1) ◽  
pp. e4644 ◽  
Author(s):  
Seyyed Rasul Mousavi ◽  
Hassan Sereshti ◽  
Hamid Rashidi Nodeh ◽  
Alireza Foroumadi
Keyword(s):  
Graphene Oxide ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
Enamino Ketones ◽  
Solvent Free Conditions

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.

scholarly journals M-Type SrFe12O19 Ferrite: An Efficient Catalyst for the Synthesis of Amino Alcohols under Solvent-Free Conditions

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Mouhsine Laayati ◽  
Ali Hasnaoui ◽  
Nayad Abdallah ◽  
Saadia Oubaassine ◽  
Lahcen Fkhar ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Amino Alcohols ◽  
Solvent Free ◽  
Strontium Hexaferrite ◽  
Epoxide Ring ◽  
Magnetic Nanocatalyst ◽  
Sem Images ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Bet Analysis

Magnetically separable strontium hexaferrite SrFe12O19 was prepared using the chemical coprecipitation method, and the nanostructured material was characterized by X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), and BET analysis. The SEM images showed the homogeneity of the chemical composition of SrFe12O19 and uniform distribution of size and morphology. The pore size of the nanomaterial and its specific area were determined by BET measurements. Strontium hexaferrite SrFe12O19 exhibited a strong magnetic field, which is highly suitable in the heterogeneous catalysis as it can be efficiently separated from the reaction. The magnetic nanocatalyst showed high activity and environmentally benign heterogeneous catalysts for the epoxide ring-opening with amines affording β-amino alcohols under solvent-free conditions. When unsymmetrical epoxides were treated in the presence of aromatics amines, the regioselectivity was influenced by the electronic and steric factors. Total regioselectivity was observed for the reactions performed with aliphatic amines. The magnetically SrFe12O19 nanocatalyst showed excellent recyclability with continuously good catalytic activities after four cycles.

scholarly journals One-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones catalyzed by SO3H@imineZCMNPs as a novel, efficient and reusable acidic nanocatalyst under solvent-free conditions

RSC Advances ◽  
2018 ◽  
Vol 8 (70) ◽  
pp. 40243-40251 ◽  
Author(s):  
Esmayeel Abbaspour-Gilandeh ◽  
Asieh Yahyazadeh ◽  
Mehraneh Aghaei-Hashjin
Keyword(s):  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Environment Friendly ◽  
Novel Environment ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Three Component Reaction

The synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives was accomplished via a three-component reaction in the presence of SO3H@imineZCMNPs as a novel, environment friendly, and reusable heterogeneous magnetic nanocatalyst under solvent-free conditions at 90 °C.

Graphene Oxide: A Metal‐Free Carbocatalyst for the Synthesis of Diverse Amides under Solvent‐Free Conditions

2019 ◽  
Vol 361 (9) ◽  
pp. 2107-2116 ◽  
Author(s):  
Khushbu P. Patel ◽  
Eknath M. Gayakwad ◽  
Vilas V. Patil ◽  
Ganapati S. Shankarling
Keyword(s):  
Graphene Oxide ◽  
Solvent Free ◽  
Metal Free ◽  
Solvent Free Conditions

A straightforward one-pot synthesis of bioactive N-aryl oxazolidin-2-ones via a highly efficient Fe3O4@SiO2-supported acetate-based butylimidazolium ionic liquid nanocatalyst under metal- and solvent-free conditions

2017 ◽  
Vol 19 (16) ◽  
pp. 3801-3812 ◽  
Author(s):  
Radhika Gupta ◽  
Manavi Yadav ◽  
Rashmi Gaur ◽  
Gunjan Arora ◽  
Rakesh Kumar Sharma
Keyword(s):  
Ionic Liquid ◽  
Solvent Free ◽  
Magnetic Nanocatalyst ◽  
One Pot ◽  
Supported Ionic Liquid ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

A supported ionic liquid-based magnetic nanocatalyst has been fabricated for the formation of pharmaceutically important N-aryl oxazolidin-2-ones.

ChemInform Abstract: Zinc Triflate Catalyzed Synthesis of β-Enamino Ketones(esters) under Solvent-Free Conditions.

ChemInform ◽  
2014 ◽  
Vol 45 (24) ◽  
pp. no-no
Author(s):  
Chengliang Feng ◽  
Shuguang Zhang ◽  
Jin Cai ◽  
Junqing Chen ◽  
Huayou Hu ◽  
...  
Keyword(s):  
Solvent Free ◽  
Enamino Ketones ◽  
Solvent Free Conditions ◽  
Zinc Triflate
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