Log in

Relevant bibliographies by topics / Pyridine Isomer

Contents

Journal articles
Dissertations / Theses
Book chapters
Conference papers

Academic literature on the topic 'Pyridine Isomer'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Pyridine Isomer.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Pyridine Isomer"

1

Pięta, Ewa, Edyta Proniewicz, Bogdan Boduszek, Tomasz K. Olszewski, Younkyoo Kim, and Leonard M. Proniewicz. "Exploring the Isomer Dependent SERS Spectra of (diphenylphosphoryl)(pyridin-2, -3, and -4-yl)methanol Adsorbed on Gold Nanocolloids." Journal of Spectroscopy 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/894749.

Full text

Abstract:

The surface-enhanced Raman scattering (SERS) spectra of three aminophosphonate derivatives of pyridine: (diphenylphosphoryl)(pyridin-2-yl)methanol (α-Pyr), (diphenylphosphoryl)(pyridin-3-yl)methanol (β-Pyr), and (diphenylphosphoryl)(pyridin-4-yl)methanol (γ-Pyr) were measured after immobilization onto colloidal gold surface. Changes in the wavenumber, broadness, and enhancement between the corresponding Raman and SERS bands allowed to deduce orientation of theα-,β-, andγ-isomers (α-,β-, andγ-refer to the position of the substituent relative to the ring nitrogen atom) of aminophosphonate deriva

APA, Harvard, Vancouver, ISO, and other styles

2

Wallenhorst, Carolin, Kirill V. Axenov, Joseph S. M. Samec, Roland Fröhlich, and Gerhard Erker. "A Salt Metathesis Route To Ruthenium Carbene Complex Isomers With Pyridine Dicarboxamide-Derived Chelate Pincer Ligands." Zeitschrift für Naturforschung B 62, no. 6 (2007): 783–90. http://dx.doi.org/10.1515/znb-2007-0606.

Full text

Abstract:

Reaction of the doubly deprotonated pyridine 2,6-dicarboxamido ligand (1) with (PCy3)2Cl2 Ru=CHPh (3a) in THF gave a mixture of (lig)(PCy3)Ru=CHPh isomers (4). The pentane soluble N,N,O-4 isomer was isolated by extraction and characterized by X-ray diffraction. The O,N, O-4 isomer was identified in the residue. Single crystals of the closely related complex (lig)(NHC) Ru=CHPh, O,N,O-5, were obtained from the reaction of 1 with (NHC)(PCy3)Cl2Ru=CHPh (3b) and used for the X-ray crystal structure analysis of the system

APA, Harvard, Vancouver, ISO, and other styles

3

Caterbow, Daniel, Daniela Künzel, Michael G. Mavros, Axel Groß, Katharina Landfester, and Ulrich Ziener. "Septipyridines as conformationally controlled substitutes for inaccessible bis(terpyridine)-derived oligopyridines in two-dimensional self-assembly." Beilstein Journal of Nanotechnology 2 (July 26, 2011): 405–15. http://dx.doi.org/10.3762/bjnano.2.46.

Full text

Abstract:

The position of the peripheral nitrogen atoms in bis(terpyridine)-derived oligopyridines (BTPs) has a strong impact on their self-assembly behavior at the liquid/HOPG (highly oriented pyrolytic graphite) interface. The intermolecular hydrogen bonding interactions in these peripheral pyridine units show specific 2D structures for each BTP isomer. From nine possible constitutional isomers only four have been described in the literature. The synthesis and self-assembling behavior of an additional isomer is presented here, but the remaining four members of the series are synthetically inaccessible

APA, Harvard, Vancouver, ISO, and other styles

4

Singh, Jaswinder, Yuekui Wang, and Gerhard Raabe. "Quantum-Chemical ab initio Calculations on the Three Isomers of Diborabenzene (C4H4B2)." Zeitschrift für Naturforschung A 65, no. 1-2 (2010): 113–22. http://dx.doi.org/10.1515/zna-2010-1-213.

Full text

Abstract:

AbstractQuantum-chemical ab initio calculations up to the ZPE+CCSD(T)/aug-cc-pVTZ//MP2/6- 311++G** level were performed on three possible structural isomers of diborabenzene (C4H4B2). All three molecules were found to be local minima on the C4H4B2 energy surface and to have closed shell singlet ground states. While the ground states of the 1,3- and 1,4-isomer are planar and of C2v and D2h symmetry, respectively, 1,2-diborabenzene is non-planar with a C2 axis passing through the center of the BB bond and the middle of the opposite carbon-carbon bond as the only symmetry element. The energetical

APA, Harvard, Vancouver, ISO, and other styles

5

Taylor, Wesley G., Tse Wai Hall, and Carl E. Schreck. "An investigation of the rotational isomers of N-acetyl-2,2-dimethyloxazolidine and related compounds by nuclear magnetic resonance spectroscopy and molecular mechanics." Canadian Journal of Chemistry 70, no. 1 (1992): 165–72. http://dx.doi.org/10.1139/v92-027.

Full text

Abstract:

The 15 2,2-dimethyloxazolidines described here were found to exist in solution predominantly as a single rotational isomer, unlike N-acetyloxazolidine (1), N-acetyl-2-methyloxazolidine (2), N-acetyl-2-(n-octyl)oxazolidine (3), and other known 2-substituted N-acyloxazolidines. Using 13C NMR spectroscopy, activation energies for interconversion of the E (minor) and Z (major) rotational isomers of 1–3 were determined from coalescence temperature measurements in pyridine-d5. A sample of N-acetyl-2,2-dimethyloxazolidine (4) was isolated for comparison. The rotational isomer of 4 was found by two-di

APA, Harvard, Vancouver, ISO, and other styles

6

Pearson, Tyler J., Ryoma Shimazumi, Julia L. Driscoll, Balu D. Dherange, Dong-Il Park, and Mark D. Levin. "Aromatic nitrogen scanning by ipso -selective nitrene internalization." Science 381, no. 6665 (2023): 1474–79. http://dx.doi.org/10.1126/science.adj5331.

Full text

Abstract:

Nitrogen scanning in aryl fragments is a valuable aspect of the drug discovery process, but current strategies require time-intensive, parallel, bottom-up synthesis of each pyridyl isomer because of a lack of direct carbon-to-nitrogen (C-to-N) replacement reactions. We report a site-directable aryl C-to-N replacement reaction allowing unified access to various pyridine isomers through a nitrene-internalization process. In a two-step, one-pot procedure, aryl azides are first photochemically converted to 3 H -azepines, which then undergo an oxidatively triggered C2-selective cheletropic carbon e

APA, Harvard, Vancouver, ISO, and other styles

7

Luo, Hongyan, and Chris Orvig. "Rhenium complexes of P,P,P′,P′-tetrakis(o-hydroxyphenyl)diphosphinoethane." Canadian Journal of Chemistry 74, no. 5 (1996): 722–29. http://dx.doi.org/10.1139/v96-078.

Full text

Abstract:

Preparation of the hydrochloride salt of a new potentially hexadentate ligand precursor P,P,P′,P′-tetrakis(o-hydroxyphenyl)diphosphinoethane dihydrochloride (abbreviated H4P2O4•2HCl) is described. From H4P2O4•2HCl, neutral [Re2O2Cl2(PPh3)2(μ-P2O4)] and dianionic [Re2O2Br4(μ-P2O4)]2− dinuclear rhenium(V) complexes were synthesized. The complexes have been characterized by elemental analysis, infrared spectroscopy, mass spectrometry, and 1H/31P{1H} NMR spectra. 31P{1H} NMR revealed that only one isomer, presumably the anti, was present for [Re2O2Cl2(PPh3)2(μ-P2O4)], and that two isomers, both an

APA, Harvard, Vancouver, ISO, and other styles

8

Mocilac, Pavle, Katie Donnelly, and John F. Gallagher. "Structural systematics and conformational analyses of a 3 × 3 isomer grid of fluoro-N-(pyridyl)benzamides: physicochemical correlations, polymorphism and isomorphous relationships." Acta Crystallographica Section B Structural Science 68, no. 2 (2012): 189–203. http://dx.doi.org/10.1107/s0108768112006799.

Full text

Abstract:

An isomer grid of nine fluoro-N-(pyridyl)benzamides (Fxx) (x = para-/meta-/ortho-) has been examined to correlate structural relationships between the experimental crystal structure and ab initio calculations, based on the effect of fluorine (Fx) and pyridine N-atom (x) substitution patterns on molecular conformation. Eight isomers form N—H...N hydrogen bonds, and only one (Fom) aggregates via intermolecular N—H...O=C interactions exclusively. The Fpm and Fom isomers both crystallize as two polymorphs with Fpm_O (N—H...O=C chains, P-syn ) and Fpm_N (N—H...N chains, P-anti ) both in P21/n (Z′ =

APA, Harvard, Vancouver, ISO, and other styles

9

Holý, Antonín, and Ivan Rosenberg. "Synthesis of isomeric and enantiomeric O-phosphonylmethyl derivatives of 9-(2,3-dihydroxypropyl)adenine." Collection of Czechoslovak Chemical Communications 52, no. 11 (1987): 2775–91. http://dx.doi.org/10.1135/cccc19872775.

Full text

Abstract:

Reaction of 9-(S)-(2,3-dihydroxypropyl)adenine (I) with chloromethanephosphonyl chloride (VII) in pyridine or triethyl phosphate, or with chloromethyl(pyridinio)phosphonate (IX) in pyridine, afforded a mixture of 2'-(IV) and 3'-O-chloromethanephosphonate (V) which were separated on anion exchange resin or alkylsilica gel. Treatment of compounds IV and V with aqueous alkaline hydroxide, followed by deionization, gave 9-(S)-(2-hydroxy-3-phosphonylmethoxypropyl)adenine (VI) and 9-(S)-(3-hydroxy-2-phosphonylmethoxypropyl)adenine (III) (HPMPA), respectively. The (R)- and (RS)-forms of III and VI we

APA, Harvard, Vancouver, ISO, and other styles

10

Pearson, Céline, and André L. Beauchamp. "1H NMR study of paramagnetic rhenium(III) monomers with nitrogen heterocycles. Crystal structures of ReCl3L2(PPh3) complexes (L = pyridine, 3-picoline, and 1-methylimidazole)." Canadian Journal of Chemistry 75, no. 2 (1997): 220–31. http://dx.doi.org/10.1139/v97-026.

Full text

Abstract:

Rhenium(III) monomers of the type ReCl3Ln(PPh3)3−n, where n = 1,2, and 3, were prepared for simple nitrogen heterocyclic ligands L and characterized mainly by 1H NMR and IR spectroscopies. Most of the 1H NMR signals of these paramagnetic compounds were assigned by using methylated pyridines. A mer-cis octahedral geometry slightly distorted by triphenylphosphine was determined by X-ray diffraction for three ReCl3L2(PPh3) complexes: L = pyridine, triclinic, [Formula: see text], a = 11.379, b = 13.532, c = 18.160 Ǻ, α = 80.16°, β = 89.57, γ = 86.27°, Z = 4, R = 0.076; L = 3-picoline, triclinic, [

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Pyridine Isomer"

1

Lavorato, David Joseph. "Hydrogen shift isomers of pyridine and other N-heterocycles, a tandem mass spectrometry study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0032/NQ66277.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Karapanayiotis, Thanassis, G. Dimopolos-Italiano, Richard D. Bowen, and J. K. Terlouw. "Reactions of Ionised Pryridazine, 2-Aminopyrazine and 2-Aminopyridine and their a-Distonic Isomers." 2004. http://hdl.handle.net/10454/3659.

Full text

Abstract:

No<br>The reactions of ionised pyridazine, aminopyrazine and aminopyridine and the corresponding ¿-distonic ions are examined by a combination of tandem mass spectrometric techniques, including analysis of metastable ion (MI), collision induced dissociation and neutralisation¿reionisation mass spectra (NRMS). Further insight into the relative stability and energy barriers towards tautomerism of each ionised heterocycle with its ¿-distonic isomer is obtained by computational methods. In all these systems, both the conventional radical-cation and the ¿-distonic tautomer are stable species which

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Pyridine Isomer"

1

Hannuksela, A., A. Lahti, and M. Hannuksela. "Nonimmunologic Immediate Contact Reactions to Three Isomers of Pyridine Carboxaldehyde." In Current Topics in Contact Dermatitis. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74299-6_90.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Davies, David T. "Quinolines and isoquinolines." In Aromatic Heterocyclic Chemistry. Oxford University Press, 1992. http://dx.doi.org/10.1093/hesc/9780198556602.003.0006.

Full text

Abstract:

This chapter assesses quinolines and isoquinolines. Quinoline and isoquinoline are two isomeric heterocyclic systems, which can be envisaged as being constructed from the fusion of a benzene ring at the C2/C3 and C3/C4 positions of pyridine respectively. They are both ten π-electron aromatic heterocycles. Like pyridine, they are moderately basic. Indeed, quinoline is sometimes used as a high boiling-point basic solvent. As with pyridine, the nitrogen atoms of quinoline and isoquinoline each bear a lone pair of electrons not involved in aromatic bonding which can be protonated, alkylated, or co

APA, Harvard, Vancouver, ISO, and other styles

3

Davies, David T. "Oxazoles, imidazoles, and thiazoles." In Aromatic Heterocyclic Chemistry. Oxford University Press, 1992. http://dx.doi.org/10.1093/hesc/9780198556602.003.0003.

Full text

Abstract:

This chapter examines oxazoles, imidazoles, and thiazoles. Oxazole, imidazole, and thiazole are the parent structures of a related series of 1,3-azoles containing a nitrogen atom plus a second heteroatom in a five-membered ring. They are isomeric with the 1,2-azoles isoxazole, pyrazole, and isothiazole, and their aromaticity derives from delocalization of a lone pair from the second heteroatom. Oxazole, imidazole, and thiazole can be formally derived from furan, pyrrole, and thiophene respectively by replacement of a CH group by a nitrogen atom at the 3 position. The presence of this pyridine-

APA, Harvard, Vancouver, ISO, and other styles

4

Taber, Douglass. "Adventures in Alkaloid Synthesis: ( + )-α-Kainic Acid (Jung), 223AB (Ma), Pumiliotoxin 251F (Jamison), Spirotryprostatin B (Trost), (-)-Drupacine (Stoltz)." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0058.

Full text

Abstract:

Enantiomerically-pure natural amino acids can serve as starting materials for alkaloid synthesis. In his synthesis (J. Org. Chem. 2007, 72, 10114) of (-)-α-kainic acid 3, Kyung Woon Jung of the University of Southern California prepared the diazo sulfone 1 from (L)-glutamic acid. Rh-mediated intramolecular C-H insertion proceeded with the predicted high diastereoselectivity, to give the lactam 2, containing seven of the ten carbon atoms and two of the three stereogenic centers of (-)-α-kainic acid 3. The absolute configuration of the nitrogen ring system(s) can also be established by chiral ca

APA, Harvard, Vancouver, ISO, and other styles

5

"13. Crystal chemistry of the isomeric N,N'-bis(pyridin-n-ylmethyl)-ethanediamides, n = 2, 3 or 4." In Multi-Component Crystals. De Gruyter, 2017. http://dx.doi.org/10.1515/9783110464955-013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Pyridine Isomer"

1

Esselman, Brian, Robert McMahon, R. Woods, and Samuel Kougias. "ROTATIONAL SPECTRUM OF 2-CYCLOPROPYLIDENEACETONITRILE - A NEW ISOMER OF PYRIDINE." In 2021 International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.ra10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!