Results 31 to 40 of about 1,834 (212)

Bicyclic Isoxazoline Derivatives: Synthesis and Evaluation of Biological Activity

open access: yesMolecules, 2022
The application of non-planar scaffolds in drug design allows for the enlargement of the chemical space, and for the construction of molecules that have more effective target–ligand interactions or are less prone to the development of resistance.
Kseniya N. Sedenkova   +11 more
doaj   +1 more source

Anionic Chiral Co(III) Complexes Mediated Asymmetric HalocyclizationSynthesis of 5Halomethyl Pyrazolines and Isoxazolines

open access: yes, 2021
An asymmetric synthesis of 5-halomethyl pyrazolines and isoxazolines which bear a tertiary stereocenter by catalytic halocyclization of β,γ-unsaturated hydrazones and ketoximes is described.
Xue-Qin Tu (11746894)   +13 more
core   +1 more source

A one-pot synthesis of 3-trifluoromethyl-2-isoxazolines from trifluoromethyl aldoxime

open access: yesBeilstein Journal of Organic Chemistry, 2013
Functionalized 3-trifluoromethyl-2-isoxazolines and 3-trifluoromethylisoxazoles were easily prepared from trifluoromethyl aldoxime 2 under mild conditions by using DIB as oxidant.
Raoni S. B. Gonçalves   +4 more
doaj   +1 more source

Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity

open access: yesAngewandte Chemie, Volume 138, Issue 20, 11 May 2026.
This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte   +2 more
wiley   +2 more sources

Regioselective Cycloaddition of Alkenes with tert-butyl Nitrite: A Cascade Approach to the Formation of Δ2‑Isoxazolines

open access: yes, 2023
A route for cycloaddition reaction of alkenes and tert-butyl nitrite to synthesize Δ2-isoxazolines has been developed. The overall process involves the formation of multiple chemical bonds without the use of a catalyst.
Yi Liu (36759)   +6 more
core   +2 more sources

3-Unsubstituted 1,5-Diaryl-2,4-pentanediones and -4-methoxy-2-pentanones:  Synthesis via Corresponding 3-Hydroxy Ketones Generated from 2-Isoxazolines

open access: yes, 2016
Aryl acetaldoximes are reacted with allylarenes in the presence of sodium hypochlorite to give 3,5-bis(arylmethyl)-2-isoxazolines which are then converted to 1,5-diaryl-4-hydroxy-2-pentanones by a reductive hydrogenation in the presence of water.
Juha T. Pulkkinen (1656310)   +1 more
core   +1 more source

The Isoxazoline Route to α-Methylen Lactones. [PDF]

open access: yesTetrahedron Letters, 1983
A new route to α-methylene lactones, important structural subunits of many natural products, has been developed using the nitrile oxide derived from 2-nitroethanol.
Alan P, Kozikowski, Arun K, Ghosh
openaire   +2 more sources

Synthesis and antibacterial studies of some novel isoxazoline derivatives [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
A series of 3-[3-(2,4-dichloro-5-fluorophenyl)-5-(2-furyl)-4,5-dihydro-1H-pyrazol-1-yl]-5-(substituted phenyl/2-thienyl)isoxazolines (4a-j) were prepared. The structures of the isoxazoline derivatives were confirmed on the bases of elemental analysis and
TEJASKUMAR SHAH, VIKAS DESAI
doaj   +3 more sources

One Step Regioselective Synthesis of 5-Aminoisoxazoles from Nitrile Oxides and α-Cyanoenamines

open access: yesMolecules, 2004
The 1,3-dipolar cycloaddition of nitrile oxides to 1-cyanoenamines gives 5-aminoisoxazoles regioselectively. Moderate to good yields could be obtained depending on the method used to generate the nitrile oxides. The intermediate isoxazolines could not be
Aïcha Derdour   +2 more
doaj   +1 more source

Synthesis, Antimicrobial and Antioxidant Activities of 2-Isoxazoline Derivatives

open access: yesMolecules, 2020
A series of derivatives of trans-3-(2,4,6-trimethoxyphenyl)4,5-dihydroisoxazolo-4,5-bis[carbonyl-(4′phenyl)thiosemicarbazide (9) and of trans-3-(2,4,6-trimethoxyphenyl)-4,5-dihydro isoxazolo-4,5-bis(aroylcarbohydrazide) (10a–c) were synthesized from ...
Asma Alshamari   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy