Results 31 to 40 of about 8,352 (265)

Photoredox Synthesis of Aryl-Hydroxylamines from Carboxylic Acids and Nitrosoarenes [PDF]

open access: yes, 2018
Hydroxylamines are found in biologically active compounds and serve as building blocks for the preparation of nitrogen-containing molecules. Here, we demonstrate the direct conversion of carboxylic acids into the corresponding alkyl hydroxylamines using ...
Lucrezia Angelini   +11 more
core   +2 more sources

Tetramethylarsenverbindungen mit kovalenter Molekülstruktur

open access: yesCHIMIA, 1975
The preparation and the properties of tetramethyl arsenic derivatives of some hydroxylamines [HONH2, HONHCH3, HON(CH3)2] and oximes [HON=CHCH3, HON=C(CH3)2] are described. The IR-, Raman- and 1H-NMR-spcctra of these monomeric compounds prove a non-ionic
R. Ott, J. Weidlein, K.-H. Mitschke
doaj   +1 more source

CXXXVI.—The estimation of hydroxylamine [PDF]

open access: yesJ. Chem. Soc., Trans., 1903
n ...
Jones, Humphrey Owen   +1 more
openaire   +1 more source

Palladium-Catalyzed Alkenyl C–H Activation/Diamination toward Tetrahydrocarbazole and Analogs Using Hydroxylamines as Single-Nitrogen Sources [PDF]

open access: yes, 2022
A palladium-catalyzed alkenyl C–H activation/diamination reaction of cycloalkenyl bromoarenes with hydroxylamines is described. A wide range of tetrahydrocarbazoles and analogs has been prepared using fine-tuning bifunctional secondary hydroxylamines as ...
Han Wang (254423)   +7 more
core   +1 more source

Generation of Mixed Anhydrides via Oxidative Fragmentation of Tertiary Cyclopropanols with Phenyliodine(III) Dicarboxylates

open access: yesMolecules, 2020
Oxidative fragmentation of tertiary cyclopropanols with phenyliodine(III) dicarboxylates in aprotic solvents (dichloromethane, chloroform, toluene) produces mixed anhydrides. The fragmentation reaction is especially facile with phenyliodine(III) reagents
Dzmitry M. Zubrytski   +3 more
doaj   +1 more source

RuO4-mediated oxidation of secondary amines: Part 1. Are hydroxylamines main intermediates? [PDF]

open access: yesJournal of the Serbian Chemical Society, 2016
The RuO4-catalyzed oxidation of secondary amines Bn-NH-CH2R (1a-b; R=H, Me) gave mainly amides, but minute amounts of nitrones PhCH=N(O)-CH2R (9a-b) and traces of Bn-N(OH)-CH2R (R=H, 4a) were also detected.
Florea Cristina A., Petride Horia
doaj   +1 more source

Synthesis of N,N,O‑Trisubstituted Hydroxylamines by Stepwise Reduction and Substitution of O‑Acyl N,N‑Disubstituted Hydroxylamines [PDF]

open access: yes, 2016
Diverse N,N,O-trisubstituted hydroxylamines, an under-represented group in compound collections, are readily prepared by partial reduction of N-acyloxy secondary amines with diisobutylaluminum hydride followed by acetylation and reduction of the so ...
Sandeep Dhanju (2593099)   +1 more
core   +1 more source

Catalyst-Free Direct Olefin Halo-Hydroxylamination: Rapid Syn-thesis of Multifunctional Hydroxylamines (MFHAs) for Structurally Complex Amines and N-Heterocycles [PDF]

open access: yes
Herein, we introduce a novel and powerful alkene difunctionalization process where anomeric amides (e.g., N-halogenated O-activated hydroxylamines) react directly with olefins, without the use of catalysts or additives, to yield the corresponding N ...
Laszlo, Kurti   +4 more
core   +1 more source

Para-Substituted O-Benzyl Sulfohydroxamic Acid Derivatives as Redox-Triggered Nitroxyl (HNO) Sources

open access: yesMolecules, 2022
Nitroxyl shows a unique biological profile compared to the gasotransmitters nitric oxide and hydrogen sulfide. Nitroxyl reacts with thiols as an electrophile, and this redox chemistry mediates much of its biological chemistry.
Yueming Long   +3 more
doaj   +1 more source

Catalytic Asymmetric Oxidation of Amines to Hydroxylamines [PDF]

open access: yes
Chiral hydroxylamines are increasingly common structural elements in pharmaceuticals and agrochemicals, but their asymmetric synthesis remains challenging.
Chen-Ho Tung (654283)   +5 more
core   +1 more source

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