Relevant bibliographies by topics / Pyridine-Pyrazole

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  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Pyridine-Pyrazole'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Pyridine-Pyrazole"

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Senthil Kumar, Kuppusamy, Bernhard Schäfer, Sergei Lebedkin, Lydia Karmazin, Manfred M. Kappes, and Mario Ruben. "Highly luminescent charge-neutral europium(iii) and terbium(iii) complexes with tridentate nitrogen ligands." Dalton Transactions 44, no. 35 (2015): 15611–19. http://dx.doi.org/10.1039/c5dt02186c.

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We report the synthesis and efficient photoluminescence of charge-neutral lanthanide (Ln = Eu<sup>3+</sup> and Tb<sup>3+</sup>) complexes based on pyrazole–pyridine–tetrazole and pyrazole–pyridine–triazole ligands.
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Rao, H. Surya Prakash, Ramalingam Gunasundari, and Jayaraman Muthukumaran. "Crystal structure analysis of ethyl 3-(4-chlorophenyl)-1,6-dimethyl-4-methylsulfanyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate." Acta Crystallographica Section E Crystallographic Communications 76, no. 3 (2020): 443–45. http://dx.doi.org/10.1107/s2056989020002479.

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In the title compound, C18H18ClN3O2S, the dihedral angle between the fused pyrazole and pyridine rings is 3.81 (9)°. The benzene ring forms dihedral angles of 35.08 (10) and 36.26 (9)° with the pyrazole and pyridine rings, respectively. In the crystal, weak C—H...O hydrogen bonds connect molecules along [100].
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Guzei, Ilia A., Teddy T. Okemwa, and Stephen O. Ojwach. "2-[(3,5-Diphenyl-1H-pyrazol-1-yl)methyl]pyridine." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1190. http://dx.doi.org/10.1107/s1600536812011804.

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The title compound, C21H17N3, crystallizes with the phenyl ring in the 3-position coplanar with the pyrazole ring within 4.04 (5)°, whereas the phenyl ring in the 5-position forms a dihedral angle of 50.22 (3)° with the pyrazole ring. There is no ambiguity regarding the position of pyridine N atom, which could have exhibited disorder between theorthopositions of the ring.
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Hossain, Sayed Muktar, Gourab Kumar Dam, Sagarika Mishra, and Akhilesh Kumar Singh. "A nano-molar level fluorogenic and oxidation state-selective chromogenic dual reversible chemosensor for multiple targets, Cu2+/S2− and Fe3+/F− ions." New Journal of Chemistry 44, no. 35 (2020): 15186–94. http://dx.doi.org/10.1039/d0nj02777d.

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Stiborová, Marie, and Sylva Leblová. "Effect of heterocyclic compounds and 2-mercaptoethanol on rape alcohol dehydrogenase." Collection of Czechoslovak Chemical Communications 52, no. 8 (1987): 2107–13. http://dx.doi.org/10.1135/cccc19872107.

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Rape alcohol dehydrogenase (ADH) is inhibited by heterocyclic compounds with a five- to six-membered ring (imidazole, pyrazole, 4-methylpyrazole, 3-methylpyrazole, pyridine, nicotine amide) and by o-phenanthroline, a heterocyclic, polycyclic compound. Pyrazole and its derivatives, imidazole and pyridine, are competitive inhibitors with respect to ethanol. Nicotine amide and o-phenanthroline behave as mixed inhibitors (competitive – noncompetitive) with respect to the substrate. The addition of Zn2+-ions to the reaction medium interferes with the competition by o-phenanthroline. 4-Methylpyrazol
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Perrin, Monique, Alain Thozet, Pilar Cabildo, Rosa Ma Claramunt, Eduard Valenti, and José Elguero. "Molecular structure and tautomerism of 3,5-bis(4-methylpyrazol-1-yl)-4-methylpyrazole." Canadian Journal of Chemistry 71, no. 9 (1993): 1443–49. http://dx.doi.org/10.1139/v93-186.

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The title compound C12N6H14, 1, crystallizes in the space group P21/n (a = 8.222(2) Å, b = 27.336(8) Å, c = 5.574(2) Å, α = 90.00°, β = 100.97(4)°, γ = 90.00°), Z = 4, d = 1.308 g cm−3. The conformation about the N—C bonds linking the pyrazole rings can be defined as EZ, with "pyridine-like" nitrogen atoms in an anti disposition [Formula: see text] and "pyridine-like" and "pyrrole-like" nitrogen atoms in a syn disposition [Formula: see text] with regard to the central pyrazole. Intermolecular hydrogen bonds between the central and the terminal pyrazole ring of configuration Z form centrosymmet
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Xiang, Shiqun, Xiaofeng Zhang, Hui Chen, Yinghua Li, Weibin Fan, and Deguang Huang. "Copper(ii) facilitated decarboxylation for the construction of pyridyl–pyrazole skeletons." Inorganic Chemistry Frontiers 6, no. 9 (2019): 2359–64. http://dx.doi.org/10.1039/c9qi00599d.

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Jochim, Aleksej, and Christian Näther. "Formation of di- and polynuclear Mn(II) thiocyanate pyrazole complexes in solution and in the solid state." Zeitschrift für Naturforschung B 73, no. 11 (2018): 793–801. http://dx.doi.org/10.1515/znb-2018-0104.

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AbstractReaction of Mn(NCS)2with pyrazole leads to the formation of three compounds with the compositions Mn(NCS)2(pyrazole)4(1), [Mn(NCS)2]2(pyrazole)6(2) and Mn(NCS)2(pyrazole)2(3). Compound1, already reported in the literature, consists of discrete complexes, in which the Mn(II) cations are octahedrally coordinated by four pyrazole ligands and two terminally N-bonded thiocyanate anions. In compound2each of the two Mn(II) cations are coordinated octahedrally by three pyrazole ligands and one terminal as well as two bridging thiocyanate anions, which link the metal cations into dimers. In com
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Naskar, Barnali, Kinsuk Das, Ramij R. Mondal, et al. "A new fluorescence turn-on chemosensor for nanomolar detection of Al3+ constructed from a pyridine–pyrazole system." New Journal of Chemistry 42, no. 4 (2018): 2933–41. http://dx.doi.org/10.1039/c7nj03955g.

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Saha, Sayan, Avik De, Arijit Ghosh, et al. "Pyridine-pyrazole based Al(iii) ‘turn on’ sensor for MCF7 cancer cell imaging and detection of picric acid." RSC Advances 11, no. 17 (2021): 10094–109. http://dx.doi.org/10.1039/d1ra00082a.

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Dissertations / Theses on the topic "Pyridine-Pyrazole"

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Couchman, Samantha M. "Syntheses and structural studies of complexes of mixed donor pyridine/phenol and pyridine/pyrazole ligands." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299312.

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Shumbula, Poslet Morgan. "Pyridine carboxamide and pyrazole palladium(II) complexes as catalyst precursors for phenylacetylene polymerization." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=init_4818_1180438754.

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<p>The objectives of this project were to synthesize and characterise pyridine carboxamide ligands and their palladium complexes and investigate their catalytic activity in the polymerization process of phenylactylene.</p>
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Bedel, Sébastien. "Oligohétérocycles dérivés de la pyridine et du pyrazole : synthèse et application à la photosensibilisation des ions EuIII et TbIII." Toulouse 3, 2004. http://www.theses.fr/2004TOU30079.

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Bechara, Ghassan. "Ligands macrocyliques d'ions lanthanide : synthèse et évaluation comme marqueurs luminescents." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1197/.

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Dans ce travail, nous avons synthétisé et étudié les propriétés photophysiques en milieu aqueux de deux séries de complexes lanthanidiques présentant des durées de vie d'émission particulièrement longues (ordre de la milliseconde), autorisant ainsi des détections résolues dans le temps. La première série porte sur des macrocycles polyazotés de 15 à 21 chaînons intégrant dans leur structure un motif chromophore (mono, bi, tri-hétérocycle) intracyclique permettant d'exalter la fluorescence d'ions lanthanide (Eu3+ et Tb3+) et un motif polyaminocarboxylique (acide triéthylène tétraamine N, N', N",
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Wu, Li-Lan, and 吳麗嵐. "Application of Phenyl-pyridine Iridium andPhenyl-pyrazole Iridium Complexes in theOrganic Light-emitting Diodes." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/39081281920114273276.

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碩士<br>國立成功大學<br>化學系碩博士班<br>94<br>New phenylpyridine (pp) compounds have been synthesized. These compounds undergo cyclometalation with iridium trichloride to form iridium (III) complexes which exhibit strong phosphorescence. The photophysical and electrochemical properties of these compounds were investigated. Electroluminescent devices were fabricated from selected iridium complexes. 　　The absorption wavelength of the pp ligands range from 250nm~350nm. The iridium complexes emit blue to green phosphorrescence with wavelength ranging from 452nm~552nm. Most of iridium complexes possess good qu
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Chiu, Chi-wen, and 邱祺文. "Synthesis and Physical Property Studies of Cyclometalated Pt(II) and Pd(II) Complexes with Tridentate Ligand Containing the Pyrazole and Pyridine." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/48909517366321211171.

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碩士<br>朝陽科技大學<br>應用化學系碩士班<br>98<br>This research mainly aims to synthesize the tridentate ligand which contained a series of new pyrazole and pyridine. With the various apparatuses such as 1H NMR, IR, Mass, and Elemental Analyzer, it’s available to examine its syntheses and characteristics. These chemical compositions could coordinate with metals and further form the organnometallic complexes with phosphorescence. On account of the effects of delocalization, it’s capable of figuring out that the bond length of pyrazole ring C(6)-C(7) is 0.05 Å shorter than the one of normal bond C-C through the
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Book chapters on the topic "Pyridine-Pyrazole"

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Taber, Douglass. "Preparation of Heteroaromatics." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0068.

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Masahiro Yoshida of the University of Tokushima described (Tetrahedron Lett. 2008, 49, 5021) the Pt-mediated rearrangement of alkynyl oxiranes such as 1 to the furan 2. Roman Dembinski of Oakland University reported (J. Org. Chem. 2008, 73, 5881) a related zinc-mediated rearrangement of propargyl ketones to furans. The cyclization of aryloxy ketones such as 3 to the benzofuran 4 developed (Tetrahedron Lett. 2008, 49, 6579) by Ikyon Kim of the Korea Research Institute of Chemical Technology is likely proceeding by a Friedel-Crafts mechanism. Sandro Cacchi and Giancarlo Fabrizi of Università degli Studi “La Sapienza”, Roma, observed (Organic Lett. 2008, 10, 2629) that base converted the enamine 5 to the pyrrole 6. Alternatively, oxidation of 5 with CuBr led to a pyridine. Zhuang-ping Zhuan of Xiamen University prepared (Adv. Synth. Cat. 2008, 350, 2778) pyrroles such as 9 by condensing an alkynyl carbinol 7 with a 1,3-dicarbonyl compound. Richard C. Larock of Iowa State University found (J. Org. Chem. 2008, 73, 6666) that combination of an alkynyl ketone 10 with 11 followed by oxidation with I-Cl led to the pyrazole 12. The “click” condensation of azides with alkynes, leading to the 1,4-disubstituted 1,2,3- triazole, has proven to be a powerful tool for combinatorial synthesis. Valery V. Fokin of Scripps/La Jolla and Zhenyang Lin and Guochen Jia of the Hong Kong University of Science and Technology have developed (J. Am. Chem. Soc. 2008, 130, 8923) a complementary approach, using Ru catalysts to prepare 1,5-disubstituted 1,2,3- triazoles. Remarkably, internal alkynes participate, and, as in the conversion of 13 to 15, propargylic alcohols direct the regioselectivity of the cycloaddition. A variety of methods have been put forward for functionalizing pyridines. Sukbok Chang of KAIST described (J. Am. Chem. Soc. 2008, 130, 9254) the direct oxidative homologation of a pyridine N -oxide 16 to give the unsaturated ester 18. Jonathan Clayden of the University of Manchester observed (Organic Lett. 2008, 10, 3567) that metalation of 19 gave an anion that rearranged to 20 with complete retention of enantiomeric excess. Shigeo Katsumura of Kwansei Gakuin University developed (Tetrahedron Lett. 2008, 49, 4349) an intriguing three-component coupling, combining 21, 22, and methanesulonamide 23 to give the pyridine 24.
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