Results 11 to 20 of about 3,560,207 (306)

DESIGN AND SIMULATION OF A MULTI-RECEIVER WIRELESS POWER TRANSFER SYSTEM BASED ON TRANSMITTER CONTROL METHOD

open access: yesJournal of Engineering and Sustainable Development, 2022
As is usual in a multiple-receiver wireless power transfer (WPT) system based on s-s geometry, the power of load obtained and system efficiency are very sensitive to changes in the number of receivers.
Muthana J. Mohammed, Turki K. Hassan
doaj   +1 more source

27 Years of Catalytic Carbonylative Coupling Reactions in Hungary (1994–2021)

open access: yesMolecules, 2022
Palladium-catalyzed carbonylation reactions, in the presence of nucleophiles, serve as very potent tools for the conversion of aryl and alkenyl halides or halide equivalents to carboxylic acid derivatives or to other carbonyl compounds.
Tímea R. Kégl   +2 more
doaj   +1 more source

A neural mass model of cross frequency coupling. [PDF]

open access: yesPLoS ONE, 2017
Electrophysiological signals of cortical activity show a range of possible frequency and amplitude modulations, both within and across regions, collectively known as cross-frequency coupling.
Mojtaba Chehelcheraghi   +3 more
doaj   +1 more source

Enantiospecific Cross-coupling of Cyclic Alkyl Sulfones

open access: yes, 2023
Methods to form carbon-carbon bonds efficiently and with control of stereochemistry are critical for the construction of complex molecules. Cross-coupling reactions are among the most efficient and widely used reactions to construct molecules, with ...
Jana, Alpin   +6 more
core   +1 more source

Synthesis and Cross-Coupling of Sulfonamidomethyltrifluoroborates [PDF]

open access: yesOrganic Letters, 2011
Sulfonamidomethyltrifluoroborates were successfully synthesized and cross-coupled with a wide range of aryl and heteroaryl chlorides, allowing the construction of a sulfonamidomethyl aryl linkage through a new disconnection, thus offering a new way to access such structurally interesting motifs.
Gary A, Molander   +2 more
openaire   +2 more sources

The Current Status of Heterogeneous Palladium Catalysed Heck and Suzuki Cross-Coupling Reactions

open access: yesMolecules, 2018
In the last 30 years, C–C cross coupling reactions have become a reliable technique in organic synthesis due their versatility and efficiency. While drawbacks have been experienced on an industrial scale with the use of homogenous systems, many ...
Philani P. Mpungose   +3 more
doaj   +1 more source

Towards triptycene functionalization and triptycene-linked porphyrin arrays

open access: yesBeilstein Journal of Organic Chemistry, 2020
Herein, 9,10-diethynyltriptycene is investigated for its use as a rigid isolating unit in the synthesis of multichromophoric arrays. Sonogashira cross-coupling conditions are utilized to attach various porphyrins and boron dipyrromethenes (BODIPYs) to ...
Gemma M. Locke   +2 more
doaj   +1 more source

An Active Catalyst System Based on Pd (0) and a Phosphine-Based Bulky Ligand for the Synthesis of Thiophene-Containing Conjugated Polymers

open access: yesFrontiers in Chemistry, 2021
To address the limitations of conventional Pd catalysts in the polymerization of thiophene-containing conjugated polymers, an active catalyst system based on Pd (0) and a phosphine-based bulky ligand, L1, is explored systematically in Suzuki–Miyaura ...
Meifang Liu   +5 more
doaj   +1 more source

Heteroaromatic Thioether−Organostannane Cross-Coupling [PDF]

open access: yesOrganic Letters, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Masahiro, Egi, Lanny S, Liebeskind
openaire   +2 more sources

Palladium-catalyzed cross coupling reactions of 4-bromo-6H-1,2-oxazines

open access: yesBeilstein Journal of Organic Chemistry, 2009
A number of 4-aryl- and 4-alkynyl-substituted 6H-1,2-oxazines 8 and 9 have been prepared in good yields via cross coupling reactions of halogenated precursors 2, which in turn are easily accessible by bromination of 6H-1,2-oxazines 1. Lewis-acid promoted
Reinhold Zimmer   +5 more
doaj   +1 more source

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