Results 51 to 60 of about 7,313 (206)
Synthesis of Deprenyl-like nitroxide free radicals and their diamagnetic derivatives [PDF]
, 2011 Synthesis of paramagnetically modified deprenyl and oxotremorine is reported. Starting from 5- and 6-membered 2,5-disubstituted nitrones (1, 6) or 4-phenyl-2,5,5-trimethyl-1H-pyrroline 1-oxide (11) deprenyl or oxotremorine like nitroxides were ...
Hideg, Kálmán +3 more
core +1 more source
Crystal structure of (2R*,3aR*)-2-phenylsulfonyl-2,3,3a,4,5,6-hexahydropyrrolo[1,2-b]isoxazole
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compound, C12H15NO3S, was prepared by 1,3-dipolar cycloaddition of 3,4-dihydro-2H-pyrrole 1-oxide and phenyl vinyl sulfone. In the molecule, both fused five-membered rings display a twisted conformation.
Yaiza Hernández +4 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
Asymmetric 1,3-dipolar cycloadditions of acrylamides [PDF]
, 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
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
Novel achievements with an old metal: Copper-promoted synthesis of four-membered azacycles [PDF]
, 2014 The synthesis of four-membered azacycles is of importance because of the chemical and biological relevance of these compounds. Recent progress in copper-catalyzed reactions has been applicable to a variety of research fields, such as heterocyclic ...
Alcaide, Benito +2 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
Homoleptic Bismuth Alkynes: Isolable Reagents for Selective Alkynyl Radical Transfer
Angewandte Chemie, Volume 138, Issue 4, 22 January 2026.The first series of fully characterized homoleptic alkynyl bismuth compounds Bi(C≡CR)3 is presented. Facile homolytic Bi–C bond cleavage grants access to alkynyl radicals, which have been employed in selective C–X bond formation (X = C, B, Se, Te). This complements existing strategies for alkynyl radical generation as it proceeds under mild and purely ...
Gargi Kundu +5 more
wiley +2 more sources