Microwave-assisted synthesis of novel 2,3-disubstituted imidazo[1,2-a]pyridines via one-pot three component reactions

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19724-19733 ◽  
Author(s):  
Shaik Karamthulla ◽  
Md. Nasim Khan ◽  
Lokman H. Choudhury
Keyword(s):  
Microwave Irradiation ◽  
Molecular Iodine ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Metal Free ◽  
Microwave Assisted ◽  
Three Component Reaction

An expeditious one-pot, metal-free, three-component reaction of arylglyoxals, cyclic 1,3-dicarbonyls and 2-aminopyridines in the presence of molecular iodine under microwave irradiation is reported.

scholarly journals Microwave Assisted Three Component Reaction Conditions to Obtain New Thiazolidinones with Different Heterocyclic Skeletons

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 38
Author(s):  
Fernando J. Lorenzo ◽  
Romina A. Ocampo ◽  
Sandra D. Mandolesi
Keyword(s):  
Microwave Irradiation ◽  
Thioglycolic Acid ◽  
Aldehyde Group ◽  
Green Solvent ◽  
Reaction Products ◽  
Reaction Conditions ◽  
One Pot ◽  
Microwave Assisted ◽  
Three Component Reaction ◽  
The One

We present here a new proposal for the “one pot” generation of new 4-thiazolidinones (9a–e) through a multicomponent reaction under microwave irradiation conditions, using aromatic and heteroaromatic amines (8a–e), absolute ethanol as a “green” solvent and modifying the aldehyde group in the glycosidic residue, synthesized from D-mannitol. The study is focused in the variation of the irradiation times and the concentration of thioglycolic acid in order to study the possibility of controlling the structure and/or stereochemistry of the products formed in the reaction. Thiazolidinones 9a–d were obtained with a 69–82% The generation of the corresponding reaction products were monitored by TLC and CG-MS, taking reaction aliquots. The conditions reaction proved to be chemoselective depending on the excess of acid and irradiation times.

Microwave-assisted synthesis of multiply-twinned Au–Ag nanocrystals on reduced graphene oxide for high catalytic performance towards hydrogen evolution reaction

2016 ◽  
Vol 4 (10) ◽  
pp. 3865-3871 ◽  
Author(s):  
Yuchen Qin ◽  
Xiaoping Dai ◽  
Xin Zhang ◽  
Xingliang Huang ◽  
Hui Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Microwave Irradiation ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution Reaction ◽  
Catalytic Performance ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Reduced Graphene ◽  
Ag Ncs

Multiply-twinned Au–Ag NCs/rGO are prepared by a one-pot method under microwave irradiation and exhibit excellent HER activity and stability.

Impact of microwave irradiation on cyclo-octeno-1,2,3-selenadiazole: formation of selenium nanoparticles and their polymorphs

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 44756-44763 ◽  
Author(s):  
Aditi A. Jadhav ◽  
Pawan K. Khanna
Keyword(s):  
Microwave Irradiation ◽  
Selenium Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted

In this work a one-pot microwave assisted synthesis of selenium nanoparticles and their different forms, by decomposition of cyclo-octeno-1,2,3-selenadiazole is described first ever time.

scholarly journals A green metal-free “one-pot” microwave assisted synthesis of 1,4-dihydrochromene triazoles

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10336-10339
Author(s):  
Tânia M. F. Alves ◽  
Guilherme A. M. Jardim ◽  
Marco A. B. Ferreira
Keyword(s):  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Metal Free ◽  
Microwave Assisted

A straightforward metal-free “one-pot” microwave procedure using PEG400 as the sole solvent in an eco-friendly process for the synthesis of 4-aryl-1,4-dihydrochromene-triazoles is described.

scholarly journals Design, Microwave-Assisted Synthesis and In Silico Prediction Study of Novel Isoxazole Linked Pyranopyrimidinone Conjugates as New Targets for Searching Potential Anti-SARS-CoV-2 Agents

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6103
Author(s):  
Faisal K. Algethami ◽  
Maher Cherif ◽  
Salma Jlizi ◽  
Naoufel Ben Ben Hamadi ◽  
Anis Romdhane ◽  
...  
Keyword(s):  
Cycloaddition Reaction ◽  
Dipolar Cycloaddition ◽  
Microwave Assisted Synthesis ◽  
Dimroth Rearrangement ◽  
One Pot ◽  
Microwave Assisted ◽  
Three Component Reaction ◽  
Key Steps ◽  
Modes Of Interaction ◽  
Native Ligand

A series of novel naphthopyrano[2,3-d]pyrimidin-11(12H)-one containing isoxazole nucleus 4 was synthesized under microwave irradiation and classical conditions in moderate to excellent yields upon 1,3-dipolar cycloaddition reaction using various arylnitrile oxides under copper(I) catalyst. A one-pot, three-component reaction, N-propargylation and Dimroth rearrangement were used as the key steps for the preparation of the dipolarophiles3. The structures of the synthesized compounds were established by 1H NMR, 13C NMR and HRMS-ES means. The present study aims to also predict the theoretical assembly of the COVID-19 protease (SARS-CoV-2 Mpro) and to discover in advance whether this protein can be targeted by the compounds 4a–1 and thus be synthesized. The docking scores of these compounds were compared to those of the co-crystallized native ligand inhibitor (N3) which was used as a reference standard. The results showed that all the synthesized compounds (4a–l) gave interesting binding scores compared to those of N3 inhibitor. It was found that compounds 4a, 4e and 4i achieved greatly similar binding scores and modes of interaction than N3, indicating promising affinity towards SARS-CoV-2 Mpro. On the other hand, the derivatives 4k, 4h and 4j showed binding energy scores (−8.9, −8.5 and −8.4 kcal/mol, respectively) higher than the Mpro N3 inhibitor (−7.0 kcal/mol), revealing, in their turn, a strong interaction with the target protease, although their interactions were not entirely comparable to that of the reference N3.

Microwave assisted novel one-pot three-component reaction for synthesis of 3-aminoimidazopyridines using molecular iodine

2021 ◽  
pp. 153452
Author(s):  
Sumbulunnisan Shareef ◽  
Saigal ◽  
Mohammad Khizr ◽  
Subash C. Sahoo ◽  
Md. Musawwer Khan
Keyword(s):  
Molecular Iodine ◽  
One Pot ◽  
Microwave Assisted ◽  
Three Component Reaction

Metal-free synthesis of quinoline-2,4-dicarboxylate derivatives using aryl amines and acetylenedicarboxylates through pseudo three-component reaction

2021 ◽  
Author(s):  
Saghir Ali ◽  
Abu Taleb Khan
Keyword(s):  
Molecular Iodine ◽  
One Pot ◽  
Metal Free ◽  
Three Component Reaction ◽  
Aryl Amines

An efficient, useful and one-pot protocol for the synthesis of quinoline-2,4-dicarboxylate scaffolds is accomplished from aryl amines and dimethyl/diethyl acetylenedicarboxylates using 20 mol% molecular iodine as a catalyst in acetonitrile...

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