Results 41 to 50 of about 12,240 (259)
2-Butyl-2-tert-butyl-5,5-diethylpyrrolidine-1-oxyls: Synthesis and Properties
Molecules, 2020 Nitroxides are broadly used as molecular probes and labels in biophysics, structural biology, and biomedical research. Resistance of a nitroxide group bearing an unpaired electron to chemical reduction with low-molecular-weight antioxidants and enzymatic
Irina F. Zhurko +8 more
doaj +1 more source
, 2016 Aryl-aldehydes containing ortho-substituted α,β-unsaturated carboxylic acid derivatives react with hydroxylamine to afford reactive N-hydroxy-carbinolamine intermediates that undergo intramolecular aza-conjugate addition reactions to afford isoindole ...
Robert S. L. Chapman (1652215) +5 more
core +1 more source
Dissolution of nitrones in alkylphosphates: A structural study
, 2022 Nitrones are chemical compounds with well-established anti-oxidant and spin-trapping properties. Their low solubility in water for many of them limits their applications, so opportune solvents must be found.
Cretu C. +5 more
core +1 more source
A mechanistic investigation of the oxidation of N,α-diphenylnitrones by dichloramine-T in aqueous acetonitrile medium - a non-linear Hammett plot [PDF]
Journal of the Serbian Chemical Society, 2009 The kinetics of oxidation of a number of meta- and para-substituted N,α-diphenylnitrones (nitrone) by dichloramine-T (DCT) was investigated in the presence of alkali in aqueous acetonitrile medium.
Manivarman S. +5 more
doaj +1 more source
, 2019 Highly accelerated inverse-electron-demand strain-promoted alkyne-nitrone cycloaddition (IED SPANC) between a sta- ble cyclooctyne (bicyclo[6.1.0]nonyne (BCN)) and nitrones delocalized into a Cα-pyridinium functionality is reported, with the ...
Alexander M., Polgar +4 more
core +1 more source
Antioxidants, 2020 Nitrones have a well-recognized capacity as spin-traps and are considered powerful free radical scavengers, which are two important issues in hypoxia-induced oxidative stress and cell death in brain ischemia.
Emma Martínez-Alonso +9 more
doaj +1 more source
Molecules, 2023 [3 + 2] Cycloaddition reactions with the participation of Z-C-(3-pyridyl)-N-methylnitrone and series of E-2-R-nitroethenes were both experimentally and theoretically explored in the framework of Molecular Electron Density Theory.
Jowita Kras +4 more
doaj +1 more source
Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy
Chemistry – A European Journal, EarlyView.Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez +3 more
wiley +1 more source
Nitrones and oxaziridines. VII. Cycloaddition reactions of nitrones with carbon disulphide
, 1973 The cyclic aldo nitrones (3)-(5) undergo cycloaddition reactions with carbon disulphide to yield the related thiolactams (6)-(8), presumably via intermediate 1,4,2-oxathiazolidine-5-thiones, which could not be isolated or detected.
DSC Black, KG Watson
core +1 more source
Chemistry – A European Journal, EarlyView.Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis +2 more
wiley +1 more source