Results 21 to 30 of about 8,352 (265)
Hydroxylamines as Oxygen Atom Nucleophiles in Transition-Metal-Catalyzed Allylic Substitution [PDF]
, 2016 The viability of hydroxylamines as nucleophiles in transition-metal-catalyzed allylic substitutions was examined. We have found that the oxygen atom of hydroxylamines having an N-electron-withdrawing substituent (also known as hydroxamic acids) acts as a
Kazumasa Yoshida (2399917) +3 more
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Molecules, 2016 Alkyl aryl sulfones were prepared in high yields via the reaction of N-arylsulfonyl hydroxylamines with electron-deficient alkenes. These reactions have the advantages of simplicity, easily available starting materials and mild reaction conditions.
Yunhui Bin, Ruimao Hua
doaj +1 more source
A Reagent for the Convenient, Solid-Phase Synthesis of N-Terminal Peptide Hydroxylamines for Chemoselective Ligations [PDF]
, 2016 A Reagent for the Convenient, Solid-Phase Synthesis of N-Terminal Peptide Hydroxylamines for Chemoselective ...
Jeffrey W. Bode (1331538) +1 more
core +5 more sources
Expedient Organocatalytic Syntheses of 4-Substituted Pyrazolidines and Isoxazolidines
Molecules, 2016 The efficient organocatalytic synthesis of heterocyclic systems of biological relevance is a subject of growing interest. We have found that the pyrrolidine/benzoic acid-catalyzed reaction of α-substituted propenals such as methacrolein, 2-benzylpropenal
Tarek Yousfi +4 more
doaj +1 more source
2-aminophenols containing electron-withdrawing groups from N-aryl hydroxylamines [PDF]
, 2010 Reaction of substituted N-aryl hydroxylamines with methanesulfonyl chloride, p-toluenesulfonyl chloride, or trifluoromethanesulfonic anhydride under basic conditions leads to the rearranged 2-aminophenols (45-94%).
Cooper, Anthony W. J. +7 more
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Polyalkoxy Nitrones as Chiral Building Blocks in Asymmetric Synthesis
Molecules, 1999 Optically active nitrones derived from both aldoses and dialdoses add metallated heterocycles in a stereocontrolled way depending on the nature of the Lewis acid used as a precomplexing agent of the nitrone.
Tomás Tejero, Pedro Merino
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International Journal of Electrochemical Science, 2021 Nitroxyl radical catalysts oxidize alcohols under an applied electric potential. It is possible to quantify the alcohol concentration from the resulting oxidation current.
Sachiko Komatsu +10 more
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Copper-catalyzed coupling of hydroxylamines with aryl iodides. [PDF]
, 2008 An efficient method for the copper-catalyzed N-arylation of hydroxylamines with aryl iodides is described. A variety of N- and O-functionalized hydroxylamines, e.g., I, were transformed in good to excellent yield with a broad range of aryl coupling ...
Hall, Adrian +4 more
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ChemistryOpen, 2022 A precursor‐directed approach to access N‐hydroxyalkyl phenylbenzoisoquinolindiones (PBIQs) has been developed. Incubation of plant material of Xiphidium caeruleum with hydroxylamines of various chain lengths (C2, C4, C6, C8, C10 and C12) resulted in 11 ...
Prof. Dr. Yu Chen +3 more
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Copper-Catalyzed Coupling of Hydroxylamines with Aryl Iodides [PDF]
, 2016 An efficient method for the copper-catalyzed N-arylation of hydroxylamines with aryl iodides is described. A variety of N- and O-functionalized hydroxylamines were transformed in good to excellent yield with a broad range of aryl coupling partners ...
Adrian Hall (58659) +4 more
core +1 more source