Synthesis and characterization of pyridine-4-carboxylic acid functionalized Fe3O4 nanoparticles as a magnetic catalyst for synthesis of pyrano[3,2-b]pyranone derivatives under solvent-free conditions

2015 ◽  
Vol 42 (3) ◽  
pp. 1899-1911 ◽  
Author(s):  
Sakineh Asghari ◽  
Majid Mohammadnia
Keyword(s):  
Carboxylic Acid ◽  
Fe3o4 Nanoparticles ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
Magnetic Catalyst ◽  
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 Bi(NO3)3 · 5H2O mediated synthesis of 4,4′-diaminotriarylmethane leuco malachite compounds under solvent-free conditions

2009 ◽  
Vol 7 (1) ◽  
pp. 138-142 ◽  
Author(s):  
Ghasem Bardajee ◽  
Farnaz Jafarpour
Keyword(s):  
Functional Groups ◽  
Substitution Reaction ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
Electrophilic Aromatic Substitution ◽  
Aromatic Substitution ◽  
Aryl Aldehydes ◽  
Solvent Free Conditions

AbstractIn this report, we described the synthesis and characterization of a variety of diaminotriarylmethane derivatives with dimethylamino functional groups. These compounds were synthesized by the tandem regio-selective electrophilic aromatic substitution reaction of N,N-dimethylaniline with aryl aldehydes to form the corresponding diaminotriarylmethane compounds. In our strategy, Bi(NO3)3 was used as a catalyst under solvent free conditions to afford the desired products in good to excellent yields.

scholarly journals Synthesis and characterization of some new heterocyclic compounds from α, β- unsaturated carbonyl system

2021 ◽  
pp. 56-63
Author(s):  
Muna A. Othman Salem ◽  
Hana A. A. Mageed ◽  
Huda S. Muftah ◽  
Reda F. El- Ezabi ◽  
Fayrouz A. Khaled
Keyword(s):  
Heterocyclic Compounds ◽  
Heterocyclic Ring ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
One Pot ◽  
Ring Systems ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

An efficient and facile one pot synthesis of 3,4-dihydropyrimidinones (Belinelli compound) from furfural, acetylacetone and urea under solvent free conditions was performed, resulted in promising yield. These compounds reacted with benzaldehyde and furfural to give the corresponding chalcones. Chalcones are used to synthesize several derivatives like pyrazolines isoxazoles and pyrimidines having different heterocyclic ring systems. Keywords: Belinelli compounds; Chalcone; Pyrazolines isoxazoles; Pyrimidines

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