Environmentally benign one-pot multicomponent synthesis of 1,4-dihydropyridine derivatives applying montmorillonite K10 as reusable catalyst

2019 ◽  
Vol 55 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Vemulapati Hanuman Reddy ◽  
Avula Krishna Kumari ◽  
Guda Mallikarjuna Reddy ◽  
Yellala Venkata Rami Reddy ◽  
Jarem Raul Garcia ◽  
...  
Keyword(s):  
Environmentally Benign ◽  
Reusable Catalyst ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Montmorillonite K10 ◽  
Dihydropyridine Derivatives

One-pot multicomponent synthesis of highly functionalized bio-active pyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives using ZrO2 nanoparticles as a reusable catalyst

2015 ◽  
Vol 17 (5) ◽  
pp. 2859-2866 ◽  
Author(s):  
Arijit Saha ◽  
Soumen Payra ◽  
Subhash Banerjee
Keyword(s):  
Room Temperature ◽  
Zro2 Nanoparticles ◽  
Reusable Catalyst ◽  
Coumarin Derivatives ◽  
Multicomponent Synthesis ◽  
One Pot

Herein, a facile one-pot multicomponent protocol for the synthesis of biologically important pyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives has been demonstrated using ZrO2 nanoparticles as reusable catalyst at room temperature.

Unprecedented one-pot multicomponent synthesis of propargylamines using Amberlyst A-21 supported CuI under solvent-free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46074-46087 ◽  
Author(s):  
Giovanna Bosica ◽  
John Gabarretta
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Terminal Alkynes ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Solvent Free Conditions

An environmentally benign, one-pot, A3-coupling reaction of various aldehydes, amines and terminal alkynes for the synthesis of propargylamine was catalysed by Amberlyst A-21 supported CuI, under heterogeneous and solvent-free conditions.

CeCl3·7H2O as mild and efficient catalyst for the one-pot multicomponent synthesis of 8-aryl-7,8-dihydro[1,3]dioxolo[4,5-g]chromen-6-ones

2011 ◽  
Vol 76 (4) ◽  
pp. 235-241 ◽  
Author(s):  
Li-Qiang Wu ◽  
Wei-Lin Li ◽  
Fu-Lin Yan
Keyword(s):  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Work Up

A series of new 8-aryl-7,8-dihydro[1,3]dioxolo[4,5-g]chromen-6-ones were synthesized via a three-component reaction of 3,4-methylenedioxyphenol, aromatic aldehydes and Meldrum’s acid in the presence of CeCl3·7H2O under solvent-free conditions. The method provided several advantages such as easy work-up, high yields and environmentally benign procedure.

A simple and efficient one-pot synthesis of Hantzsch 1,4-dihydropyridines using silica sulphuric acid as a heterogeneous and reusable catalyst under solvent-free conditions

2011 ◽  
Vol 65 (6) ◽  
Author(s):  
Eskandar Kolvari ◽  
Mohammad Zolfigol ◽  
Nadiya Koukabi ◽  
Behzad Shirmardi-Shaghasemi
Keyword(s):  
Sulphuric Acid ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Dihydropyridine Derivatives

AbstractA simple, inexpensive and efficient one-pot synthesis of 1,4-dihydropyridine derivatives under solvent-free conditions using silica sulphuric acid (SSA) as a heterogeneous and recyclable catalyst is reported.

Aqua-mediated one-pot synthesis and aromatization of pyrimido-fused 1,4-dihydropyridine derivatives using ammonium salts

2007 ◽  
Vol 85 (5) ◽  
pp. 400-405 ◽  
Author(s):  
Mazaahir Kidwai ◽  
Kavita Singhal
Keyword(s):  
Ammonium Nitrate ◽  
Single Step ◽  
Ammonium Salts ◽  
Environmentally Benign ◽  
High Yield ◽  
Pyridine Derivatives ◽  
One Pot ◽  
One Pot Synthesis ◽  
Synthetic Procedure ◽  
Dihydropyridine Derivatives

Dipyrimidine-fused pyridine derivatives were synthesized using 1,3-diketone, aldehyde, different ammonium salts, and water, as the solvent. Aromatization was observed when ammonium nitrate was used as the source of nitrogen, and thus, dipyrimidine-fused pyridine derivatives were synthesized in one-pot synthetic procedure. This environmentally benign procedure leads to high yield of products (80%–90%) in a single step, with greater purity using water as the solvent.Key words: water, aromatization, dipyrimidopyridine, ammonium salts.

scholarly journals One-pot multicomponent synthesis of highly substituted pyridines using hydrotalcite as a solid base and reusable catalyst

2021 ◽  
pp. 169-174
Author(s):  
Sandip R. Kale ◽  
Santosh Kumar Surve
Keyword(s):  
Catalytic Activity ◽  
Multicomponent Reaction ◽  
Aromatic Aldehydes ◽  
Significant Loss ◽  
Solid Base ◽  
Reusable Catalyst ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Substituted Pyridines

One-pot synthesis of highly substituted pyridines has been demonstrated via multicomponent reaction of aldehydes, malononitrile and thiophenol using Mg-Al hydrotalcite as a solid base and reusable catalyst. The catalytic activity is intimately connected to the basicity of the catalyst. The best activities were observed with the Mg/Al: 5 catalyst. The catalyst could be reused for further run without a significant loss in activity. The protocol was also applicable for various aromatic aldehydes which affords desired product in good to excellent yield.

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