Results 81 to 90 of about 8,940 (287)

Cu-Catalyzed Oxyalkynylation and Aminoalkynylation of Unactivated Alkenes: Synthesis of Alkynyl-Featured Isoxazolines and Cyclic Nitrones.

open access: yesOrganic Letters, 2018
A convenient and efficient vicinal oxyalkynylation/aminoalkynylation of internal unactivated alkenes is achieved by means of a Cu-catalyzed radical cascade reaction of unsaturated ketoximes with ethynylbenziodoxolone (EBX) reagents. This protocol enables
Wen-Jun Han   +5 more
semanticscholar   +1 more source

The Azidofunctionalization of Alkenes

open access: yesChemistryEurope, Volume 3, Issue 5, September 18, 2025.
The azidofunctionalization of alkenes offers a powerful strategy for synthesizing nitrogen‐containing compounds by installing both an azide and a second functional group in one step. This approach, employing photoredox catalysis, transition metals, and radical methods, is efficient, selective, and versatile, with applications in pharmaceuticals and ...
Pierre Palamini, Jerome Waser
wiley   +1 more source

Synthesis and reductive cleavage of 3-(2-flurophenyl) and 3-(4-flurophenyl)-cyclopent-5-en[d]isoxazolines by raney nickel in trifluroacetic acid [PDF]

open access: yes, 2013
3-Fluoro arylcycloopent-5-en[d]isoxazolines have been obtained via the 1,3-dipolar cycloaddition of cyclopentadiene to aromatic nitrile oxides. The reductive cleavage of these isoxazolines by Raney nickel in trifluoroacetic acid led to corresponding ...
Antonevich, I. P.   +2 more
core  

Synthesis of 1,2,3-Triazole 5-Chloroisatin Derivatives via Copper-Catalyzed 1,3-Dipolar Cycloaddition Reactions [PDF]

open access: yes, 2017
A facile and simple protocol for the ‘Click\u27 cycloaddition of organic azides with N-propargylchloroisatine catalyzed by CuI, produces in good yields novel of 1,4-disubstituted 1,2,3-triazoles were obtained.
Rodi, Y. K. (Y)   +3 more
core   +1 more source

Kupfer(II)‐photokatalysierte Radikalannellierung von Nitroalkanen mit Alkenen oder Alkinen zur Synthese von Isoxazolinen und Isoxazolen

open access: yesAngewandte Chemie, Volume 137, Issue 37, September 8, 2025.
Wir stellen ein Cu(II)‐photokatalytisches Verfahren vor, bei dem handelsübliche Nitroalkane für die Synthese von Isoxazolinen und Isoxazolen aus Alkenen bzw. Alkinen verwendet werden. Detaillierte mechanistische Untersuchungen ergaben, dass der breite Substratbereich, der sowohl aktivierte als auch nicht aktivierte Alkene und Alkine umfasst, auf einen ...
Sunaina Sardana   +3 more
wiley   +1 more source

trans-Hydroxylation of cyclopent-5-ene[d]isoxazolines [PDF]

open access: yes, 2013
The title reaction has been studied as a variant of the cyclopentane ring functionalization of cyclopent-5-ene[d]isoxazolines as the key intermediates in total synthesis of azaand oxo prostaglandin analogues by nitrileoxides approach.
Antonevich, I. P., Nesterova, S. V.
core  

Effectiveness of sarolaner in the clinical management of furuncular myiasis in dogs naturally infested with Dermatobia hominis (Diptera: Cuterebridae)

open access: yesParasites & Vectors, 2021
Background The human botfly, Dermatobia hominis, is a common cause of furuncular myiasis in dogs in Latin America. Lesions can be single or multiple, each harboring an individual larva, presented as an erythematous nodule that causes pruritus and pain ...
Paula A. Andriotti   +5 more
doaj   +1 more source

Asymmetric 1,3-dipolar cycloadditions of acrylamides [PDF]

open access: yes, 2009
This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides.
Kissane, Marie, Maguire, Anita R.
core   +1 more source

Ultrafine Bubbles (UFB) Alleviate Toxicity of Fluxametamide‐Based Insecticides to Nontarget Freshwater Species, Daphnia magna

open access: yesEnvironmental Quality Management, Volume 35, Issue 1, Fall 2025.
ABSTRACT Pesticide contamination in freshwater ecosystems poses a significant threat to water quality and aquatic life, potentially disrupting entire food webs. Fluxametamide (FMT), a novel insecticide regarded as safe for nontarget species, has not been extensively studied in aquatic environments, raising concerns about its potential toxicity to ...
Desty Pratiwi   +5 more
wiley   +1 more source

Electrochemical Synthesis of Isoxazoles and Isoxazolines via Anodic Oxidation of Oximes

open access: yesChemElectroChem, 2023
Isoxazol(in)es are widely featured structural motifs in natural products, agrochemicals, and pharmaceuticals. The first intermolecular approach for a direct electrochemical synthesis from readily available aldoximes is reported.
Silja Hofmann   +4 more
doaj   +1 more source

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