ChemInform Abstract: Preparation and Characterization of a Silica-Based Magnetic Nanocomposite and Its Application as a Recoverable Catalyst for the One-Pot Multicomponent Synthesis of Quinazolinone Derivatives.

ChemInform ◽  
2016 ◽  
Vol 47 (15) ◽  
pp. no-no
Author(s):  
Ali Maleki ◽  
Mahboubeh Rabbani ◽  
Shirin Shahrokh
Keyword(s):  
Magnetic Nanocomposite ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Recoverable Catalyst ◽  
The One ◽  
Quinazolinone Derivatives

An efficient protocol for the one-pot multicomponent synthesis of polysubstituted pyridines by using a biopolymer-based magnetic nanocomposite

2015 ◽  
Vol 18 (12) ◽  
pp. 1307-1312 ◽  
Author(s):  
Ali Maleki ◽  
Abbas Ali Jafari ◽  
Somayeh Yousefi ◽  
Vahid Eskandarpour
Keyword(s):  
Magnetic Nanocomposite ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
The One

Green multicomponent synthesis of four different classes of six-membered N-containing and O-containing heterocycles catalyzed by an efficient chitosan-based magnetic bionanocomposite

2018 ◽  
Vol 90 (2) ◽  
pp. 387-394 ◽  
Author(s):  
Ali Maleki ◽  
Mina Ghassemi ◽  
Razieh Firouzi-Haji
Keyword(s):  
Room Temperature ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Multicomponent Synthesis ◽  
Step Method ◽  
Sem Images ◽  
One Pot ◽  
Recoverable Catalyst ◽  
Ft Ir ◽  
The One

Abstract In this work, an efficient chitosan-based magnetic bionanocomposite was synthesized via a two-step method and characterized by Fourier-transform infrared (FT-IR) spectroscopy, thermo gravimetric analysis (TGA), energy-dispersive X-ray (EDX) analysis and scanning electron microscopy (SEM) images. Then, it was used as a heterogeneous catalyst for the one-pot multicomponent syntheses of a variety of heterocyclic compounds including 2-amino-4H-pyrans, 2-amino-4H-chromens and polyhydroquinoline derivatives in ethanol at room temperature. The catalyst was simply separated from the reaction mixture by an external magnet and reused several times. The products were isolated from the reaction mixtures, without any need of column chromatography, in high-to-excellent yields. A reusable and easily recoverable catalyst, use of a green solvent, room temperature and mild reaction conditions are some advantages of the present work.

scholarly journals Clean one-pot multicomponent synthesis of pyrans using a green and magnetically recyclable heterogeneous nanocatalyst

SynOpen ◽  
2021 ◽  
Author(s):  
Mina Ghassemi ◽  
Ali Maleki
Keyword(s):  
Room Temperature ◽  
Significant Loss ◽  
Copper Ferrite ◽  
Multicomponent Synthesis ◽  
Thermo Gravimetric ◽  
Sem Images ◽  
One Pot ◽  
Three Component Reaction ◽  
Ft Ir ◽  
The One

Copper ferrite (CuFe2O4) magnetic nanoparticles (MNPs) were synthesized via thermal decomposition method and applied as a reusable and green catalyst in the synthesis of functionalized 4H-pyran derivatives using malononitrile, an aromatic aldehyde and a β-ketoester in ethanol at room temperature. Then it was characterized by Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX) analysis, scanning electron microscopy (SEM) images, thermo gravimetric and differential thermo gravimetric (TGA/DTG) analysis. The catalyst was recovered from the reaction mixture by applying an external magnet and decanting the mixture. Recycled catalyst was reused for several times without significant loss in its activity. Running the one-pot three-component reaction at room temperature, no use of eternal energy source and using a green solvent provide benign, mild, and environmentally friendly reaction conditions; as well, ease of catalyst recovering, catalyst recyclability, no use of column chromatography and good to excellent yields are extra advantages of this work.

Synthesis and characterization of dicationic 4,4′-bipyridinium dichloride ordered mesoporous silica nanocomposite and its application in the preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25816-25823 ◽  
Author(s):  
Aigin Bashti ◽  
Ali Reza Kiasat ◽  
Babak Mokhtari
Keyword(s):  
Mesoporous Silica ◽  
Synthesis And Characterization ◽  
Ordered Mesoporous Silica ◽  
One Pot ◽  
Ordered Mesoporous ◽  
Environmentally Safe ◽  
P Application ◽  
The One ◽  
Solvent Free Synthesis

Application of SBA@BiPy2+ 2Cl− nanocomposite as a novel environmentally safe heterogeneous nanoreactor for the one-pot solvent-free synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives.

ZrOCl2·8H2O: an efficient Lewis acid catalyst for the one-pot multicomponent synthesis of β-acetamido ketones

Tetrahedron ◽  
2006 ◽  
Vol 62 (17) ◽  
pp. 4059-4064 ◽  
Author(s):  
Rina Ghosh ◽  
Swarupananda Maiti ◽  
Arijit Chakraborty ◽  
Santu Chakraborty ◽  
Alok K. Mukherjee
Keyword(s):  
Lewis Acid ◽  
Acid Catalyst ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Lewis Acid Catalyst ◽  
The One

An efficient and recyclable acid–base bifunctional core–shell nano-catalyst for the one-pot deacetalization–Knoevenagel tandem reaction

2018 ◽  
Vol 42 (14) ◽  
pp. 11610-11615 ◽  
Author(s):  
Zitao Wang ◽  
Xiaofeng Yuan ◽  
Qi’an Cheng ◽  
Tichun Zhang ◽  
Jun Luo
Keyword(s):  
Tandem Reaction ◽  
Core Shell ◽  
Acid Base ◽  
One Pot ◽  
Recoverable Catalyst ◽  
Nano Catalyst ◽  
The One

An acid–base bifunctional nano-catalyst was synthesized and applied as an efficient and recoverable catalyst in the one-pot deacetalization–Knoevenagel tandem reaction.

Efficient pseudo five-component synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives promoted by a novel ionic liquid catalyst

2018 ◽  
Vol 73 (3-4) ◽  
pp. 191-195 ◽  
Author(s):  
Zahra Abshirini ◽  
Abdolkarim Zare
Keyword(s):  
Ionic Liquid ◽  
Disulfonic Acid ◽  
Thermal Gravimetric ◽  
One Pot ◽  
Mild Conditions ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
The One ◽  
C Nmr

AbstractIn this research, initial production and characterization of a novel Brønsted-acidic ionic liquid, namely,N,N,N′,N′-tetramethylethylenediaminium-N,N′-disulfonic acid hydrogen sulfate ([TMEDSA][HSO4]2), has been described (characterization was achieved using Fourier-transform infrared spectroscopy,1H nuclear magnetic resonance (NMR),13C NMR, and mass and thermal gravimetric spectra). Thereafter, utilization of [TMEDSA][HSO4]2as a highly effectual catalyst for the synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives through the one-pot pseudo five-component reaction of phenylhydrazine (2 eq.) with ethyl acetoacetate (2 eq.) and arylaldehydes (1 eq.) in relatively mild conditions, has been reported.

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