Results 31 to 40 of about 7,972 (156)

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., Rajarajan G., Manikandan G., Sekar M., Jayabharathi J., Thanikachalam V.   +5 more
doaj   +1 more source

Crystal structure of trans-dichloridobis[N-(5,5-dimethyl-4,5-dihydro-3H-pyrrol-2-yl-κN)acetamide]palladium(II) dihydrate

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title complex, [PdCl2(C8H14N2O)2]·2H2O, was obtained by N–O bond cleavage of the oxadiazoline rings of the trans-[dichlorido-bis(2,5,5-trimethyl-5,6,7,7a-tetrahydropyrrolo[1,2-b][1,2,4]oxadiazole-N1)]palladium(II) complex.
Jamal Lasri, Naser Eltaher Eltayeb, Matti Haukka, Bandar A. Babgi   +3 more
doaj   +1 more source

Introducing the Cis‐2,3‐Bis(trifluoromethyl)cyclopropyl Chemotype: Late‐Stage Installation and Stereoelectronic Properties

ChemistryEurope, EarlyView.
The cis‐2,3‐bis(trifluoromethyl)cyclopropyl chemotype is introduced. The steric demand of this motif is intermediate between that of the heptafluoroisopropyl and prefluorotertbutyl groups; yet, it induces significantly less lipophilicity than these due to its facial polarity.
Daniel Gaviña, Zeyu Feng, David Herrero, Martin Simon, Christopher Golz, Manuel Alcarazo   +5 more
wiley   +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, Robby Büchner, Mattis Fondell, Albert M. Brouwer   +3 more
wiley   +1 more source

Controlling Competitive Radical Pathways: Insights from Aryl Diazonium Electrografting

Chemistry – A European Journal, EarlyView.
This work shows that nitrobenzene diazonium electrografting results from competition between aryl and diazenyl radicals, which govern film composition. Using simulations and control strategies, grafting conditions are tuned to favor specific radicals. It enables selective formation of azo‐enriched films and paves the way toward the precise control of ...
Sara Helis, Jean Pinson, Philippe Decorse, Jonathan Hamon, Jean‐Marc Noël, Tony Breton   +5 more
wiley   +1 more source

Nephroprotective Effects of Tetramethylpyrazine Nitrone TBN in Diabetic Kidney Disease

Frontiers in Pharmacology, 2021
Diabetic kidney disease (DKD) is the leading cause of end-stage renal failure, but therapeutic options for nephroprotection are limited. Oxidative stress plays a key role in the pathogenesis of DKD.
Mei Jing, Mei Jing, Yun Cen, Fangfang Gao, Ting Wang, Jinxin Jiang, Qianqian Jian, Liangmiao Wu, Liangmiao Wu, Baojian Guo, Fangcheng Luo, Fangcheng Luo, Gaoxiao Zhang, Ying Wang, Lipeng Xu, Zaijun Zhang, Yewei Sun, Yuqiang Wang   +17 more
doaj   +1 more source

Synthesis and characterization of amphiphilic nitroxide 1,1,3,3–tetraethylisoindoline–2–oxyl–5–sodium sulfonate (TEIOSNa)

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal, Martha Eugenia Albores Velasco, René O. Vargas, Rubén Mil‐Martínez   +3 more
wiley   +1 more source

Alpha, Beta- Unsaturated Lactone-Nitrone Cycloadditions: a Route to the Synthesis of (±)–Tussilagin [PDF]

مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1994
Reaction of nitrone (V with a, f1 -unsaturated lactone C.4) resulted in the isolation of a single adduct (7). The observed high regiochemical control has encouraged further explorations of natural product synthesis.
Mohammed A. Al-Nuri
doaj   +1 more source

Recent Advances in Bioconjugation of Aromatic Amino Acid Residues by a Reactivity‐Guided Approach

The Chemical Record, EarlyView.
This review highlights recent advances in the bioconjugation of aromatic amino acids residues, focusing on strategies that leverage their inherent chemical reactivity to enable precise and versatile modifications of biomacromolecules, illustrating relevant applications.
Bruno M. da S. Santos, Lívia C. R. M. da Frota, Thais G. Silva, Fernanda G. Finelli   +3 more
wiley   +1 more source

Copper-mediated synthesis of N-alkenyl-α,β-unsaturated nitrones and their conversion to tri- and tetrasubstituted pyridines

Beilstein Journal of Organic Chemistry, 2015
A Chan–Lam reaction has been used to prepare N-alkenyl-α,β-unsaturated nitrones, which undergo a subsequent thermal rearrangement to the corresponding tri- and tetrasubstituted pyridines.
Dimitra Kontokosta, Daniel S. Mueller, Dong-Liang Mo, Wiktoria H. Pace, Rachel A. Simpson, Laura L. Anderson   +5 more
doaj   +1 more source