One‐pot three‐component reaction; synthesis of new symmetrically bridge 4,4’‐(1,4‐phenylene)di‐pyrimidines under solvent free conditions

2021 ◽  
Author(s):  
Asmaa H. Mohamed ◽  
Hager S. Abdelmeged ◽  
Raafat M. Shaker ◽  
Fathy F. Abdel‐Latif
Keyword(s):  
Solvent Free ◽  
Reaction Synthesis ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction

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.

ZnO@SnO2 Mixed Metal Oxide as an Efficient and Recoverable Nanocatalyst for the Solvent Free Synthesis of Hantzsch 1,4-Dihydropyridines

2019 ◽  
Vol 16 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Bharatkumar M. Sapkal ◽  
Prakash K. Labhane ◽  
Shamrao T. Disale ◽  
Dhananjay H. More
Keyword(s):  
Metal Oxide ◽  
Metal Oxide Nanoparticles ◽  
Reaction Times ◽  
Solvent Free ◽  
Catalyst Loading ◽  
Mixed Metal Oxide ◽  
One Pot ◽  
Mixed Metal ◽  
Solvent Free Conditions ◽  
Three Component Reaction

An efficient synthesis of Hantzsch 1,4-dihydropyridines via a one-pot three-component reaction of ethyl acetoacetate, substituted aldehydes and ammonium acetate in the presence of ZnO@SnO2 mixed metal oxide nanoparticles under solvent-free conditions has been reported. Compare to the reported reactions, this method shows attractive aspects such as cleaner reaction profile, shorter reaction times, minimum catalyst loading and high yields. Isolated catalysts were reused for new reactions without considerable loss of their catalytic activity.

scholarly journals Efficient Synthesis of 1-Amidoalkyl-2-Naphthols by One-Pot, Three-Component Reaction under Solvent-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Zahed Karimi-Jaberi ◽  
Marziyeh Jokar ◽  
S. Zoleykha Abbasi
Keyword(s):  
Trichloroacetic Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
One Pot Condensation ◽  
High Yields ◽  
Free Media

Two efficient and direct procedures have been developed for the preparation of 1-amidoalkyl-2-naphthols by a one-pot condensation of aldehydes, 2-naphthol, and amides in the presence of trichloroacetic acid or cobalt (II) chloride as catalyst. The reactions were carried out under solvent-free media. High yields, short reaction times, easy workup of the catalyst are advantages of these procedures.

scholarly journals An Efficient and Green Procedure for the Synthesis of 2,4,6-Triarylpyridines Using PPA-SiO2as a Reusable Heterogeneous Catalyst Under Solvent-Free Conditions

2012 ◽  
Vol 9 (4) ◽  
pp. 2037-2043 ◽  
Author(s):  
Abolghasem Davoodnia ◽  
Bahareh Razavi ◽  
Niloofar Tavakoli-Hoseini
Keyword(s):  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Substantial Reduction ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
High Yields ◽  
Work Up

Silica gel-supported polyphosphoric acid (PPA-SiO2) was found to be highly efficient, eco-friendly and recyclable heterogeneous catalyst for the synthesis of 2,4,6-triarylpyridines through one-pot three-component reaction of acetophenone, aryl aldehydes, and ammonium acetate under solvent-free conditions. This method has several advantages, such as simple procedure with an easy work-up, short reaction times, and high yields. Furthermore, the catalyst could be recycled after a simple work-up, and used at least three times without substantial reduction in its catalytic activity.

ChemInform Abstract: Synthesis of Amidoalkyl Chromen-2-ones by One Pot Three Component Reaction under Solvent Free Conditions.

ChemInform ◽  
2014 ◽  
Vol 45 (48) ◽  
pp. no-no
Author(s):  
Narender Reddy Emmadi ◽  
Krishnaiah Atmakur ◽  
Madhu Chennapuram ◽  
Jagadeesh Babu Nanubolu
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction

scholarly journals CeCl3⋅7H2O/SiO2as an Efficient and Recyclable Catalyst for the Synthesis of Dihydropyrano[3,2-b]chromenediones

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Chong Zhang ◽  
Yan Qu
Keyword(s):  
Kojic Acid ◽  
Aromatic Aldehydes ◽  
Catalytic Amount ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
High Yields

Dihydropyrano[3,2-b]chromenedione derivatives were synthesized in moderate-to-high yields in one-pot three-component reaction from the corresponding aromatic aldehydes, kojic acid, and dimedone, in the presence of catalytic amount ofCeCl3⋅7H2O/SiO2as a nontoxic, reusable, inexpensive, and easily available reagent, under solvent-free conditions.

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