Relevant bibliographies by topics / Pyridine-N-oxides

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Academic literature on the topic 'Pyridine-N-oxides'

Author: Grafiati
Published: 5 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Pyridine-N-oxides"

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Andreev, V. P. "Relative nucleophilic reactivity of pyridines and pyridine N-oxides (supernucleophilicity of pyridine N-oxides)." Russian Journal of Organic Chemistry 45, no. 7 (2009): 1061–69. http://dx.doi.org/10.1134/s1070428009070136.

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Abraham, Michael H., Lesya Honcharova, Silvana A. Rocco, William E. Acree, Jr, and Karina M. De Fina. "The lipophilicity and hydrogen bond strength of pyridine-N-oxides and protonated pyridine-N-oxides." New Journal of Chemistry 35, no. 4 (2011): 930. http://dx.doi.org/10.1039/c0nj00893a.

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Wrzeszcz, Zuzanna, and Renata Siedlecka. "Heteroaromatic N-Oxides Modified with a Chiral Oxazoline Moiety, Synthesis and Catalytic Applications." Catalysts 11, no. 4 (2021): 444. http://dx.doi.org/10.3390/catal11040444.

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Interesting properties of N-oxides and pyridine oxazoline compounds have become the starting point to synthesize compounds connecting both groups. A multi-step synthesis of a series of chiral oxazoline substituted pyridine N-oxides, alkyl derived of pyridine N-oxides, bipyridine N-oxides, and isoquinoline N-oxides, based on amino alcohols derived from natural amino acids or other previously prepared, is presented herein. Various synthetic pathways have been designed and tested according to the properties and limitations imposed by the target products. The encountered problems related to the st
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Hisano, Takuzo, Kazunobu Harano, Toshikazu Matsuoka, Ryuichi Fukuoka, Motoji Murase, and Hirotoshi Yamada. "Pericyclic Reactions of Pyridine N-Oxides." HETEROCYCLES 23, no. 1 (1985): 173. http://dx.doi.org/10.3987/r-1985-01-0173.

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5

Chmurzynski, L., and Z. Warnke. "Acid-Base Equilibria of Substituted Pyridine N-Oxides in N,N-Dimethylformamide and Dimethyl Sulfoxide." Australian Journal of Chemistry 46, no. 2 (1993): 185. http://dx.doi.org/10.1071/ch9930185.

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Acidity constants have been determined potentiometrically for a variety of conjugate acids of substituted pyridine N-oxides in N,N- dimethylformamide ( dmf ) and dimethyl sulfoxide ( dmso ). The pKa values in these solvents varied in the same direction and correlated with the pKa values of these species in water and in the protophobic aprotic solvent acetonitrile. Further, a linear relationship has been established between the pKa values in the two protophilic aprotic solvents under study. The most basic substituted pyridine N-oxides exhibited a weak tendency towards cationic homoconjugation i
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Greenberg, Arthur, Alexa R. Green, and Joel F. Liebman. "Computational Study of Selected Amine and Lactam N-Oxides Including Comparisons of N-O Bond Dissociation Enthalpies with Those of Pyridine N-Oxides." Molecules 25, no. 16 (2020): 3703. http://dx.doi.org/10.3390/molecules25163703.

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A computational study of the structures and energetics of amine N-oxides, including pyridine N-oxides, trimethylamine N-oxide, bridgehead bicyclic amine N-oxides, and lactam N-oxides, allowed comparisons with published experimental data. Most of the computations employed the B3LYP/6-31G* and M06/6-311G+(d,p) models and comparisons were also made between the results of the HF 6-31G*, B3LYP/6-31G**, B3PW91/6-31G*, B3PW91/6-31G**, and the B3PW91/6-311G+(d,p) models. The range of calculated N-O bond dissociation energies (BDE) (actually enthalpies) was about 40 kcal/mol. Of particular interest was
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Möhrle, Hans, and Robert Nießen. "Umsetzung von N-Alkylpyridinium-Salzen mit Hydroxylamin / Reaction of N-Alkylpyridinium Salts with Hydroxylamine." Zeitschrift für Naturforschung B 55, no. 5 (2000): 434–42. http://dx.doi.org/10.1515/znb-2000-0514.

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1-Methylpyridinium salts showed no reaction with excessive hydroxylamine, but nicotinic acid derivatives in HMPT gave the corresponding N-oxides. 3-Acetyl-1-methylpyridinium iodide generated the hydroximino-pyridine 1-oxide 13 and the isoxazoles 14, 15E, and 15Z. 2- and 4-Cyano-l-methylpyridinium iodides underwent no ring cleavage, but altered only the functional group. However, the 3-cyano compound was converted into the corresponding pyridine N-oxides with carboxamide, hydroxyamidine and carbaldoxime groups.
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Igeta, Hiroshi, Yoshikuni Itoh, and Akio Ohsawa. "Flash Vacuum Pyrolysis of Pyridine N-Oxides." HETEROCYCLES 24, no. 1 (1986): 256. http://dx.doi.org/10.3987/r-1986-01-0256.

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Ohsawa, Akio, Takashi Itoh, Yoshikuni Itoh, and Hiroshi Igeta. "Flash Vaccum Pyrolysis of Pyridine N-Oxides." HETEROCYCLES 31, no. 5 (1990): 783. http://dx.doi.org/10.3987/com-90-5335.

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Belova, N. V., N. I. Giricheva, Yu A. Zhabanov, V. P. Andreev, and G. V. Girichev. "Sublimation Enthalpies of Substituted Pyridine N-Oxides." Russian Journal of General Chemistry 91, no. 10 (2021): 1932–37. http://dx.doi.org/10.1134/s1070363221100029.

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Dissertations / Theses on the topic "Pyridine-N-oxides"

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Knott, Jane Marie. "Studies on Pyridine n-oxides." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:cc74d06b-9840-4695-9f47-961583da147c.

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The work described herein is directed towards the Claisen rearrangements and [3+2] cycloaddition reaction of pyridine N-oxide systems. The pyridine N-oxide molecule is a very versatile and useful synthetic intermediate for the construction of more complex pyridines. Chapter 1 contains a review of work carried out within the group towards Claisen rearrangement of benzene-type systems. The acid catalysed rearrangement of these systems affords a high degree of regioselectivity. A literature survey of the [3+2] cycloaddition reaction of both aliphatic nitrones and aromatic N-oxides with various di
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Puttreddy, Rakesh. "Pyridine N-oxides as Versatile Ligands for Silver(I)." Thesis, University of Canterbury. School of Chemistry, 2013. http://hdl.handle.net/10092/8203.

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Chapter 1 gives a brief introduction to metallosupramolecular chemistry, silver(I) chemistry and the synthesis and coordination chemistry of pyridine mono-, di- and tri-N-oxides. Chapter 2 describes the syntheses of 17 [16 known and 1 new] pyridine N-oxides using either mCPBA or 50% H₂O₂ as the oxidising agent. It also describes 33 new X-ray crystal structures, of which 23 are silver(I) complexes and the remaining are molecular species, protonated ligands and unreported ligand crystal structures. The N-O group is shown to coordinate with up to three silver atoms with dimensionalities ranging
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3

Liu, Shanshan [Verfasser]. "Conversion of Pyridine N-Oxides to Tetrazolopyridines and Palladium-Catalyzed Regiocontrolled C‒H/C‒H Cross Coupling of Pyridine N-Oxides and Pyrroles / Shanshan Liu." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1084634600/34.

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Zucker, Sina Patricia [Verfasser]. "Investigation of Structure-Reactivity Relationships of Arylpalladium Complexes in Transmetalations with Arylzinc Reagents : and Palladium-Catalyzed Directed Halogenations of Bipyridine N-Oxides, and Mechanistic Investigations of the Direct Arylation of Pyridine N-Oxides with Bromoarenes / Sina Patricia Zucker." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1124465286/34.

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Svensson, Akusjärvi Emma [Verfasser]. "Mechanistic Investigations of the Direct Arylation of Pyridine N-oxides with Bromoarenes and Structure-Reactivity Relationship of Aryl Palladium Complexes in Transmetalations with Organoboron Compounds / Emma Svensson Akusjärvi." Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1176635034/34.

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Sun, Ho-Yan. "Studies on the Mechanism of Direct Arylation of Pyridine N oxides: Evidence for the Essential Involvement of Acetate from the Pd(OAc)2 Pre-Catalyst at the C-H Bond Cleaving Step." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19760.

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Detailed mechanistic studies on the palladium-catalyzed direct arylation of pyridine N-oxides are presented. The order of each reaction component is determined to provide a general mechanistic picture. The C-H bond cleaving step is examined in further detail through computational studies, and the calculated results are in support of an inner-sphere concerted metallation-deprotonation (CMD) pathway. Competition experiments were conducted using N-oxides of varying electronic characters, and results revealed an enhancement of rate when using a more electron-deficient species which is in support o
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Andersson, Hans. "Reaction between grignard reagents and heterocyclic N-oxides synthesis of substituted pyridines, piperidines and piperazines /." Doctoral thesis, Umeå : Department of Chemistry, Umeå University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-25619.

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Rong, Dawen, Victoria A. Phillips, R. S. Rubio, Castro M. Angeles, and Richard T. Wheelhouse. "A safe, convenient and efficient method for the preparation of heterocyclic N-oxides using urea-hydrogen peroxide." 2008. http://hdl.handle.net/10454/6160.

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A novel, convenient, and high-yielding method has been developed for the preparation of heterocyclic N-oxides. The reaction uses the urea·hydrogen peroxide addition complex as a peroxide source for the in situ generation of trifluoroperacetic acid. The advantages of this method are easy handling of a stable, solid oxidant; high yields and simple removal of excess reagents and by-products.
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Books on the topic "Pyridine-N-oxides"

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Ban-Oganowska, Hanna. N-tlenki pochodnych 2,6-dimetylopirydyny. Wydawn. Akademii Ekonomicznej we Wrocławiu, 1991.

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Book chapters on the topic "Pyridine-N-oxides"

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Koukal, Petr, Jan Ulč, David Nečas, and Martin Kotora. "Pyridine N-Oxides and Derivatives Thereof in Organocatalysis." In Topics in Heterocyclic Chemistry. Springer International Publishing, 2017. http://dx.doi.org/10.1007/7081_2017_3.

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Mehrotra, R. C., and B. S. Saraswat. "From Neutral Oxygen Donor Ligands [Ethers, Aldehydes, Ketones, Pyridine N-Oxides, Phosphine Oxides, Arsine Oxides, and Dialkyl(Aryl) Sulfoxides]." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch8.

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3

D. Adesina, Adebimpe. "The Chemistry of Benzo and Carbocyclic Derivatives of Pyridine." In Exploring Chemistry with Pyridine Derivatives [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108127.

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The chemistry of pyridine and its derivatives is of considerable importance in the synthesis of intermediates leading to biologically active compounds and novel materials. Generally, derivatives of pyridine are stable and relatively unreactive but can be attacked by electrophiles at ring nitrogen and certain carbon atoms. Pyridines undergo radical substitution reactions preferentially at the 2-position. Simple pyridines and their benzo derivatives are weak bases that form salts with strong acids. Various Lewis acids form complexes with pyridine and its benzo derivatives. The quaternization of pyridine and its benzo derivatives using alkyl and acyl halides have been used as versatile synthetic intermediates to biologically active compounds as final products. Precursors to cyanine dyes have been prepared by means of the 1,4-addition of pyridines and quinolines to acrylamide. N-oxides, obtained by the oxidation of pyridine and its benzo analogues, are versatile intermediates in organic synthesis.
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Reports on the topic "Pyridine-N-oxides"

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Parshikov, Igor. Microbial Transformation of Some Ethylpyridines by Fungi. Intellectual Archive, 2022. http://dx.doi.org/10.32370/iaj.2635.

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We were observed transformation 4-ethylpyridine and 2-methyl-5-ethylpyridine by fungus Beauveria bassiana ATCC 7159. Stereoselective oxidation of methylene group leading to the optically active (-)-(1-hydroxyethyl)pyridine was shown. Besides, the hydroxylation of methyl groups and the oxidation of the heterocyclic ring in the nitrogen atom to the respective primary alcohols and N-oxides were observed
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