scholarly journals Microwave-assisted efficient and facile synthesis of tetramic acid derivatives via a one-pot post-Ugi cascade reaction

2020 ◽  
Vol 16 ◽  
pp. 663-669
Author(s):  
Yong Li ◽  
Zheng Huang ◽  
Jia Xu ◽  
Yong Ding ◽  
Dian-Yong Tang ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Cascade Reaction ◽  
Synthetic Methods ◽  
Tetramic Acid ◽  
Facile Synthesis ◽  
One Pot ◽  
Simple Operation ◽  
Microwave Assisted ◽  
Broad Scope ◽  
Microwave Assisted Method

A facile microwave-assisted method for the synthesis of tetramic acid derivatives has been developed through an Ugi/Dieckmann cyclization strategy with DBU. This two-step one-pot procedure afforded the targeted tetramic acid analogues in good yields. With commercially available Ugi starting materials, microwave irradiation, a simple operation, excellent yields, and a broad scope, this reaction has the potential to produce a large number of tetramic acid analogues, which cannot be easily accessed by the classic synthetic methods.

scholarly journals Solid-state nitrogen-doped carbon nanoparticles with tunable emission prepared by a microwave-assisted method

RSC Advances ◽  
2021 ◽  
Vol 11 (63) ◽  
pp. 39917-39923
Author(s):  
Fitri Aulia Permatasari ◽  
Fitriyanti Nakul ◽  
Tirta Rona Mayangsari ◽  
Akfiny Hasdi Aimon ◽  
Bebeh Wahid Nuryadin ◽  
...  
Keyword(s):  
Solid State ◽  
Microwave Irradiation ◽  
Carbon Nanoparticles ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Nitrogen Doped Carbon ◽  
Microwave Assisted Method ◽  
Tunable Emission

Tunable emissive solid-state carbon nanoparticles (CNPs) have been successfully synthesized by a facile synthesis through microwave irradiation.

Facile one-pot synthesis of Cu2ZnSnS4 quaternary nanoparticles using a microwave-assisted method

CrystEngComm ◽  
2013 ◽  
Vol 15 (46) ◽  
pp. 9863 ◽  
Author(s):  
Kuo-Chin Wang ◽  
Peter Chen ◽  
Chuan-Ming Tseng
Keyword(s):  
One Pot ◽  
Microwave Assisted ◽  
One Pot Synthesis ◽  
Microwave Assisted Method

Improved Protocols for Microwave-Assisted Cu(I)-Catalyzed Huisgen 1,3-Dipolar Cycloadditions

2007 ◽  
Vol 72 (8) ◽  
pp. 1014-1024 ◽  
Author(s):  
Pedro Cintas ◽  
Katia Martina ◽  
Bruna Robaldo ◽  
Davide Garella ◽  
Luisa Boffa ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Microwave Irradiation ◽  
Ultrasound Irradiation ◽  
Conventional Heating ◽  
Dipolar Cycloaddition ◽  
One Pot ◽  
Click Reactions ◽  
Dipolar Cycloadditions ◽  
Microwave Assisted ◽  
New Applications

The Huisgen 1,3-dipolar cycloaddition of azides and acetylenes catalyzed by Cu(I) salts, leading to 1,2,3-triazoles, is one of the most versatile "click reactions". We have developed a series of optimized protocols and new applications of this reaction starting from several substrates, comparing heterogeneous vs homogeneous catalysis, conventional heating vs microwave irradiation or simultaneous microwave/ultrasound irradiation. Both non-conventional techniques strongly promoted the cycloaddition (bromide → azide → triazole), that could be conveniently performed in a one-pot procedure. This was feasible even with such bulky molecules as functionalized β-cyclodextrins (β-CD), starting from 61-O-tosyl-β-CD or from heptakis[6-O-(tert-butyldimethylsilyl)]-21-O-propargyl-β-CD. "Greener" heterogeneous catalysis with charcoal-supported Cu(II) or Cu(I) (prepared under ultrasound) was advantageously employed.

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.

One-pot microwave assisted approach for synthesis of CdSe/CdS core-shell quantum dots (QDs) and investigating optical properties

2016 ◽  
Vol 30 (07) ◽  
pp. 1650074 ◽  
Author(s):  
M. Molaei ◽  
F. Salari Bardsiri ◽  
A. R. Bahador ◽  
M. Karimipour
Keyword(s):  
Core Shell ◽  
Heat Sensitivity ◽  
X Ray Diffraction ◽  
Cdse Qds ◽  
One Pot ◽  
X Ray ◽  
Microwave Assisted ◽  
Transmission Electron ◽  
Core Shell Structure ◽  
Microwave Assisted Method

In this work, CdSe QDs were synthesized using a microwave assisted method and chemical reaction between NaHSe, CdSO4 at the presence of TGA as capping molecule. Thereafter without CdSe extraction, CdS shell was grown subsequently around CdSe cores by a reaction based on the heat sensitivity of Na2S2O3 dissociation. Synthesized QDs were characterized by means of X-ray diffraction spectroscopy (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), UV–Vis and photoluminescence (PL) spectroscopy. All of these analyzes confirmed formation of CdSe QDs and successfully growth of CdS shell on surface of CdSe to forming CdSe/CdS core-shell structure.

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.

Facile synthesis of 4-quinolone derivatives via one-pot cascade reaction under transition-metal-free conditions

2015 ◽  
Vol 56 (24) ◽  
pp. 3777-3781 ◽  
Author(s):  
Chao Huang ◽  
Jia-Hui Guo ◽  
Huang-Mei Fu ◽  
Ming-Long Yuan ◽  
Li-Juan Yang
Keyword(s):  
Transition Metal ◽  
Cascade Reaction ◽  
Facile Synthesis ◽  
One Pot ◽  
Metal Free ◽  
Quinolone Derivatives

An expedient microwave assisted regio- and stereoselective synthesis of spiroquinoxaline pyrrolizine derivatives and their AChE inhibitory activity

2017 ◽  
Vol 41 (2) ◽  
pp. 873-878 ◽  
Author(s):  
Adinarayana Murthy Akondi ◽  
Sowmya Mekala ◽  
Mannepalli Lakshmi Kantam ◽  
Rajiv Trivedi ◽  
L. Raju Chowhan ◽  
...  
Keyword(s):  
Inhibitory Activity ◽  
Stereoselective Synthesis ◽  
Facile Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Ache Inhibitory Activity ◽  
The One

We report here an efficient protocol for the one-pot facile synthesis of spiro[indeno[1,2-b]quinoxaline-11,3′-pyrrolizine]heterocyclic scaffolds and their AChE inhibitory studies.

scholarly journals One-pot synthesis of graphene quantum dots and simultaneous nanostructured self-assembly via a novel microwave-assisted method: impact on triazine removal and efficiency monitoring

RSC Advances ◽  
2018 ◽  
Vol 8 (52) ◽  
pp. 29939-29946 ◽  
Author(s):  
Beatriz Fresco-Cala ◽  
M. Laura Soriano ◽  
Alice Sciortino ◽  
Marco Cannas ◽  
Fabrizio Messina ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Graphene Quantum Dots ◽  
One Pot ◽  
Graphene Quantum Dot ◽  
Microwave Assisted ◽  
Microwave Reaction ◽  
One Step ◽  
Microwave Assisted Method

Graphene quantum dot (GQDs) assemblies from a one-step microwave reaction as bifunctional materials in remediation of triazines.

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