Results 21 to 30 of about 2,836,503 (289)

Intramolecular cascade annulation triggered by rhodium(III)-catalyzed sequential C(sp2)–H activation and C(sp3)–H amination

open access: yesBeilstein Journal of Organic Chemistry, 2019
A rhodium(III)-catalyzed intramolecular oxidative annulation of O-substituted N-hydroxyacrylamides for the construction of indolizinones via sequential C(sp2)–H activation and C(sp3)–H amination has been developed.
Liangliang Song   +3 more
doaj   +1 more source

Evaluation of Different Bottom-up Routes for the Fabrication of Carbon Dots

open access: yesNanomaterials, 2020
Carbon dots (CDs) are carbon-based nanoparticles with very attractive luminescence features. Furthermore, their synthesis by bottom-up strategies is quite flexible, as tuning the reaction precursors and synthesis procedures can lead to an endless number ...
Diana M. A. Crista   +2 more
doaj   +1 more source

The Development of Microwave Thermal Analysis (MWTA)and its application to the study of Carbons and other materials [PDF]

open access: yes
This research involves the development of a totally new approach to thermal analysis in which microwave energy is used not only to heat the sample but also to detect thermally induced transformations via the effects of changes in its dielectric ...
Hamilton, Ian
core   +4 more sources

Microwave-Enhanced Synthesis of Phosphonoacetamides

open access: yesSynthetic Communications, 2011
Abstract An efficient microwave protocol is described for the Michaelis–Arbuzov synthesis of secondary and tertiary N-aryl (and alkyl) (diethylphosphono)acetamides 1, by reaction of chloro- and bromoacetamides with triethyl phosphite in the presence of catalytic amounts of sodium iodide. Remarkable acceleration of the reaction (minutes vs.
Gruber, Nadia   +3 more
openaire   +2 more sources

Dispersive Fourier Transformation for Versatile Microwave Photonics Applications [PDF]

open access: yes, 2014
: Dispersive Fourier transformation (DFT) maps the broadband spectrum of an ultrashort optical pulse into a time stretched waveform with its intensity profile mirroring the spectrum using chromatic dispersion.
Wang, Chao, Chao Wang
core   +1 more source

Synthesis of Metal Nanoparticles under Microwave Irradiation: Get Much with Less Energy

open access: yesMetals, 2023
Microwave irradiation is widely used to intensify various chemical processes, including in the synthesis of nanomaterials. The purpose of this review is to present recent trends in the application of microwave heating for the preparation of monometallic,
Leonid Kustov, Kseniia Vikanova
doaj   +1 more source

Microwave and Conventional Study of Coumarin-Oxadiazole Adducts and their Anti-Microbial Evaluation [PDF]

open access: yesFolia Medica, 2021
Introduction: Nowadays, researchers are progressively concentrated to generate economical, affordable and also greener synthesis approach for the synthesis of various heterocycles.
Khushal Kapadiya, Piyush Dholaria
doaj   +3 more sources

Rapid and Economic Access to Some NSAIDS-Based Bioactive Heterocycles

open access: yesJournal of Chemistry, 2013
The use of microwave energy for the synthesis is considered as one of the alternate strategies. The present work includes the synthesis of some newer 2,5-disubstituted-1,3,4-oxadiazole analogues using both conventional and alternate rapid methods.The ...
A. V. Chavan   +3 more
doaj   +1 more source

What does the future hold for microwave? "Microwave effect"

open access: yes, 2015
Although we use microwave heating for chemical processes worth millions of dollars, the mechanism of the microwave heating is not very well understood. Progress in measuring local temperatures in microwave-heated transformations will allow us to search ...
MARINAKIS, S, Howard,, B
core   +1 more source

Microwave-Assisted Synthesis and Functionalization of 2-Pyridones, 2-Quinolones and Other Ring-Fused 2-Pyridones

open access: yes, 2006
2-pyridones are important heterocycles with great applicability in medicinal chemistry and this core structure can be found in compounds with various biological/medicinal applications.
Nils Pemberton   +5 more
core   +1 more source

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