Results 21 to 30 of about 3,560,207 (306)

Oxidative Photocatalytic Homo- and Cross-Coupling of Phenols: Non-Enzymatic, Catalytic Method for Coupling Tyrosine

open access: yes, 2020
The first, oxidative photocatalytic method for phenol-phenol homo-coupling and cross-coupling is described and isolated yields of up to 97% are obtained.
Philip H., Gilmartin   +2 more
core   +1 more source

Deaminative vinylation and arylation cross-coupling reactions

open access: yes, 2023
Watson, Mary P.This thesis focuses on nickel-catalyzed vinylation and arylation cross-coupling reactions via C-N bond activation. Chapter 1 describes a vinylation method that was inspired by an analogous alkylation.
Lucas Baca, Diana
core   +1 more source

Iron-Catalyzed C(sp2)–C(sp3) Cross-Coupling of Aryl Chlorobenzoates with Alkyl Grignard Reagents

open access: yesMolecules, 2020
Aryl benzoates are compounds of high importance in organic synthesis. Herein, we report the iron-catalyzed C(sp2)−C(sp3) Kumada cross-coupling of aryl chlorobenzoates with alkyl Grignard reagents.
Elwira Bisz, Michal Szostak
doaj   +1 more source

Carbon-Carbon Cross Coupling Reactions in Ionic Liquids Catalysed by Palladium Metal Nanoparticles

open access: yesMolecules, 2010
A brief summary of selected pioneering and mechanistic contributions in the field of carbon-carbon cross-coupling reactions with palladium nanoparticles (Pd-NPs) in ionic liquids (ILs) is presented.
Martin H. G. Prechtl   +2 more
doaj   +1 more source

Catalytic System for Cross-Coupling of Heteroaryl Iodides with a Nitronyl Nitroxide Gold Derivative at Room Temperature

open access: yesMolecules, 2023
A simple and highly effective methodology for the cross-coupling of heteroaryl iodides with NN–AuPPh3 at room temperature is reported. The protocol is based on a novel catalytic system consisting of Pd2(dba)3·CHCl3 and the phosphine ligand MeCgPPh having
Igor Zayakin   +5 more
doaj   +1 more source

Access and Modulation of Substituted Pyrrolo[3,4-c]pyrazole-4,6-(2H,5H)-diones

open access: yesMolecules, 2023
The first access to polyfunctionnalized pyrrolo[3,4-c]pyrazole-4,6-(2H,5H)-dione derivatives is reported. The series were generated from diethyl acetylenedicarboxylate and arylhydrazines, which afforded the key intermediates bearing two functional ...
Abdelaziz Ejjoummany   +5 more
doaj   +1 more source

3-Aryl-5-aminobiphenyl Substituted [1,2,4]triazolo[4,3-c]quinazolines: Synthesis and Photophysical Properties

open access: yesMolecules, 2023
Amino-[1,1′]-biphenyl-containing 3-aryl-[1,2,4]triazolo[4,3-c]quinazoline derivatives with fluorescent properties have been designed and synthesized. The type of annelation of the triazole ring to the pyrimidine one has been unambiguously confirmed by ...
Alexandra E. Kopotilova   +9 more
doaj   +1 more source

Palladium-Catalyzed Modification of Unprotected Nucleosides, Nucleotides, and Oligonucleotides

open access: yesMolecules, 2015
Synthetic modification of nucleoside structures provides access to molecules of interest as pharmaceuticals, biochemical probes, and models to study diseases.
Kevin H. Shaughnessy
doaj   +1 more source

Synthesis of chiral germanium center enabled by poly-deborylative alkylation and desymmetrization

open access: yesNature Communications
Chiral germanium centers are historically undervalued due to their extremely limited synthetic accessibility. Although germanium shares similar chemical properties with silicon, synthesizing chiral germanium centers proves significantly more challenging.
Ke Wang, Xin-Yuan Liu, Zhe Dong
doaj   +1 more source

Non-linear MPC for winding loss optimised torque control of anisotropic PMSM

open access: yesThe Journal of Engineering, 2019
For a non-linear anisotropic permanent magnet synchronous machine (PMSM), a prediction model for model predictive control (MPC) considering effects like cross-coupling and saturation is developed in a straight forward procedure.
Christoph Schnurr   +2 more
doaj   +1 more source

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