Results 51 to 60 of about 13,292 (250)
Boron–Boron Single Bonds Mimicking Transition Metals
European Journal of Inorganic Chemistry, Volume 28, Issue 23, August 26, 2025.Through careful design of the substituents, ambiphilic cationic diboranes are formed through substituent elimination from stable nucleophilic diboranes. The ambiphilic reactivity could be used to coordinate and selectively reduce organic substrates in the diborane coordination sphere.
Hans‐Jörg Himmel
wiley +1 more source
(Z)-1-(1,3-Diphenyl-1H-pyrazol-4-yl)-N-phenylmethanimine N-oxide
IUCrData, 2018 In the title nitrone, C22H17N3O, the dihedral angles between the central pyrazole ring and pendant N-bound, C-bound and nitrone-bound phenyl rings are 20.93 (6), 41.27 (6), and 32.57 (6)°, respectively.
Shaaban K. Mohamed +5 more
doaj +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
A Brief History of Plastic Additives. Part 1: Antioxidants
Macromolecular Materials and Engineering, Volume 310, Issue 8, August 2025.The development of suitable antioxidants has been a decisive element for the success of plastics in particular in the field of polyolefins. Sterically hindered phenol structures, amines, and sulfur‐containing products including multifunctional substances comprise today´s commercial range. Stabilizers based on renewable resources and tailor‐made systems
Rudolf Pfaendner
wiley +1 more source
STUDY OF CYCLOREVERSION OF NTTRONE-CY CLODIMERS [PDF]
Journal of Sciences, Islamic Republic of Iran, 1993 A series of 1,3-dipolar cycloaddition reactions are carried out using cyclodimers of simple nitrones and various dipolarophiles; substituted isoxazolidines are isolated and identified.
doaj
BET & ELF Quantum Topological Analysis of Neutral 2-Aza-Cope Rearrangement of γ-Alkenyl Nitrones
Molecules, 2017 The 2-Aza-Cope rearrangement of γ-alkenyl nitrones is a rare example of the neutral thermal 2-aza-Cope process that usually takes place with cationic species.
Pedro Merino +3 more
doaj +1 more source
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
Archiv der Pharmazie, 2018 Novel quinoline derivatives carrying nitrones and oxime as nitric oxide donors were prepared and characterized using different spectroscopic techniques.
Mahmoud S. Abdelbaset +5 more
semanticscholar +1 more source
Reaction of Nitrones with Phosphinylallenes: DFT Mechanistic Investigations
European Journal of Organic Chemistry, Volume 28, Issue 28, July 29, 2025.The mechanism of the reaction between phosphinylallenes and nitrones is investigated by DFT calculations to elucidate the overall pathway and the stereochemical outcome. The initial (3+2) cycloaddition delivers an unstable isoxazolidine ylidene intermediate, spontaneously rearranging to the 4‐phosphinylpyrrolidin‐3‐one via a radical pathway. This study
Rayhane Hammami +5 more
wiley +1 more source
Kinugasa Reactions in Water: From Green Chemistry to Bioorthogonal Labelling
Molecules, 2015 The Kinugasa reaction has become an efficient method for the direct synthesis of β-lactams from substituted nitrones and copper(I) acetylides. In recent years, the reaction scope has been expanded to include the use of water as the solvent, and with ...
Mariya Chigrinova +4 more
doaj +1 more source