Application of Fe3O4@SiO2/(CH2)3-[imidazolium-SO3H]Cl as a robust, magnetically recoverable solid acid catalyst for the facile preparation of arylbispyranylmethanes

2017 ◽  
Vol 95 (12) ◽  
pp. 1248-1252 ◽  
Author(s):  
Mohammad Ali Zolfigol ◽  
Mahdiyeh Navazeni ◽  
Meysam Yarie ◽  
Roya Ayazi-Nasrabadi
Keyword(s):  
Effective Potential ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Core Shell ◽  
Synthetic Procedure ◽  
Three Component Reaction ◽  
Facile Preparation ◽  
Green Conditions

In this study, Fe3O4@SiO2/(CH2)3-[imidazolium-SO3H]Cl shows robust promoting capability in the synthesis of arylbispyranylmethane derivatives under mild and green conditions. Arylbispyranylmethanes were synthesized via efficient three-component reaction of various aromatic aldehydes with 4-hydroxy-6-methyl-2H-pyran-2-one. The nanomagnetic core-shell catalyst presented effective potential of at least eight times recycling applicability in the described synthetic procedure.

scholarly journals Ceric Ion Loaded MCM-41 Catalyzed Synthesis of Substituted Mono- and Bis-dihydropyrimidin-2(1H)-ones

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Pullar Vadivel ◽  
Rathinam Ramesh ◽  
Appaswami Lalitha
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
One Pot ◽  
Solvent Free Condition ◽  
Three Component Reaction ◽  
High Yields ◽  
Work Up ◽  
Mcm 41

An effective one-pot three-component reaction of aromatic aldehydes with 1,3-diketone and urea or thiourea under solvent-free condition leads to the formation of mono- and bis-dihydropyrimidin-2-(1H)-ones using Ce-MCM-41 as a recyclable solid acid catalyst. This method has several advantages like simple and easy work-up with shorter reaction time, reusability of catalyst, and high yields of Biginelli products.

scholarly journals Phospho sulfonic acid: A novel and efficient solid acid catalyst for the one-pot preparation of 2H-indazolo[2,1-b]-phthalazine-triones

2013 ◽  
Vol 78 (4) ◽  
pp. 469-476 ◽  
Author(s):  
Reza Kiasat ◽  
Arash Mouradezadegun ◽  
Jafar Saghanezhad
Keyword(s):  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalytic Amount ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
The One ◽  
Short Time

The efficient one-pot condensation of aldehyde, dimedone, and phthalhydrazide has been achieved in the presence of a catalytic amount of phospho sulfonic acid as a novel environmentally benign heterogeneous solid acid under solvent-free conditions. A diversified 2H-indazolo[1,2-b]phthalazinetrione derivatives were prepared in good to excellent yields in short time. The economical factors (time, cost, waste etc.) for this three-component reaction hold promise for the future of organic synthesis.

scholarly journals One-pot Three-component Synthesis of β-amino Carbonyl Compounds Using Nanocrystalline Solid Acid Catalyst

2013 ◽  
Vol 1 ◽  
pp. 194308921350716 ◽  
Author(s):  
Abbas Teimouri ◽  
Leila Ghorbanian
Keyword(s):  
Carbonyl Compounds ◽  
Organic Molecules ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Reaction Times ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
One Pot ◽  
The Mannich Reaction

This study presents a simple highly versatile and efficient synthesis of various β-amino carbonyl compounds in the Mannich reaction of acetophenone with aromatic aldehydes and aromatic amines in the presence of nanosulfated zirconia, nanostructured ZnO, nano-γ-alumina, and nano-ZSM-5 zeolites as the catalyst in ethanol at moderate temperature. The optical properties of the nanostructured organic molecules were studied. The advantages of methods are short reaction times, milder conditions, easy workup, and purification of products by nonchromatographic methods. The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of efficiency.

Synthesis of tricyanomethanesulfonic acid as a novel nanostructured and recyclable solid acid: application at the synthesis of biological henna-based chromenes

2017 ◽  
Vol 95 (5) ◽  
pp. 560-570 ◽  
Author(s):  
Mohammad Ali Zolfigol ◽  
Ardeshir Khazaei ◽  
Saied Alaie ◽  
Saeed Baghery
Keyword(s):  
Electron Microscopy ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Reusable Catalyst ◽  
Thermal Gravimetric ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Diffraction Patterns

A novel and unique nanostructured solid acid, namely tricyanomethanesulfonic acid (TCMS), was designed, synthesized, and attained as an ecofriendly, reusable catalyst for the one-pot three-component synthesis of 2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromene derivatives from the reaction between aromatic aldehydes, 2-hydroxynaphthalene-1,4-dione (henna), and malononitrile under solvent-free conditions at room temperature with good to excellent yields and a short reaction time. The TCMS catalyst was prepared and fully characterized by FTIR, 1H NMR, 13C NMR, mass, X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermal gravimetric (TG), and derivative thermal gravimetric (DTG) analyses. The nanostructured solid acid catalyst was simply recycled at least eight times without any loss of catalytic activity. This process is improved as a safe and appropriate procedure for the synthesis of 2-amino-3-cyano-4-aryl-5,10-dioxo-5,10-dihydro-4H-benzo[g]chromenes using an environmentally friendly and green recyclable catalyst. Thus, TCMS is a good candidate for the synthesis of new molecular organic frameworks and gelators.

scholarly journals A green, reusable and highly efficient solid acid catalyst for the oxidation of aldehydes to the corresponding carboxylic acids using H2O2 and KMnO4: H5PV2Mo10O40 (10-molybdo-2-vanadophosphoric heteropolyacid)

2011 ◽  
Vol 76 (11) ◽  
pp. 1513-1522 ◽  
Author(s):  
Abdollah Shojaei ◽  
Ali Rezvani ◽  
Majid Heravi
Keyword(s):  
Hydrogen Peroxide ◽  
Carboxylic Acids ◽  
Relative Stability ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Practical Method ◽  
Mild Conditions ◽  
Catalyzed Oxidation

H5PV2Mo10O40-catalyzed oxidation of aromatic aldehydes to the corresponding carboxylic acids using hydrogen peroxide and KMnO4 as oxidants under mild conditions is reported. This system provides an efficient, convenient and practical method for the oxidation of aromatic aldehydes. In this work, differences between Keggin and Dawson type polyoxometalates are addressed in term of relative stability, hardness and acidity.

Core–shell Fe3O4@SiO2@HNbMoO6 nanocomposites: new magnetically recyclable solid acid for heterogeneous catalysis

2015 ◽  
Vol 3 (7) ◽  
pp. 3456-3464 ◽  
Author(s):  
P. Shen ◽  
H. T. Zhang ◽  
H. Liu ◽  
J. Y. Xin ◽  
L. F. Fei ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Self Assembly ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Core Shell ◽  
Layer By Layer ◽  
Assembly Process ◽  
Modified Layer

A modified layer-by-layer self-assembly process was developed to fabricate magnetically recyclable solid acid catalyst for acetalization and acetalization reactions.

scholarly journals An Efficient Synthesis of Tetrahydrobenzo[b]pyran Derivatives Using Sulfonic Acid Functionalized Silica as an Efficient Catalyst

2011 ◽  
Vol 8 (1) ◽  
pp. 293-299 ◽  
Author(s):  
Ghodsi Mohammadi Ziarani ◽  
Alireza Abbasi ◽  
Alireza Badiei ◽  
Zeinab Aslani
Keyword(s):  
Single Crystal ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Functionalized Silica ◽  
Efficient Synthesis ◽  
Efficient Catalyst ◽  
X Ray

Tetrahydrobenzo[b]pyran derivatives were efficiently synthesized by the reaction of appropriated aromatic aldehydes, malononitrile and dimedone in the presence of SiO2-Pr-SO3H as a nanoporous and recoverable solid acid catalyst, in good to excellent yields. Single crystal x-ray analysis conclusively confirmed the structure of the 2-amino-3-cyano-7,7-dimethyl-4-(4-methylphenyl)-5-oxo-4H-5,6,7,8-tetrahydro-benzopyran.

Environmentally Benign Approach for the Synthesis of Azo Dyes in the Presence of Mesoporous Sulfated Core‐Shell Zirconia‐Copper(I) Oxide Solid Acid Catalyst

2019 ◽  
Vol 4 (17) ◽  
pp. 5097-5105 ◽  
Author(s):  
Lakshminarayana Parashuram ◽  
Swamy Sreenivasa ◽  
Sathyanarayana Rao Akshatha ◽  
Velu Udaya Kumar ◽  
Sandeep Kumar
Keyword(s):  
Azo Dyes ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Environmentally Benign ◽  
Core Shell

Study of the Catalytic Activity of Zr(HPO4)2 in the Synthesis of Hexahydroquinoline Derivatives under Solvent-free Conditions

2013 ◽  
Vol 68 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Shahrzad Abdolmohammadi
Keyword(s):  
Catalytic Activity ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

2-Amino-7,7-dimethyl-5-oxo-1,4-diaryl-1,4,5,6,7,8-hexahydroquinoline-3-carbonitrile derivatives were synthesized by the one-pot four-component reaction of aromatic aldehydes, malononitrile, dimedone and arylamines in the presence of Zr(HPO4)2·H2O (α-ZrP) as an effective and recyclable solid acid catalyst, in high yields.

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