Relevant bibliographies by topics / Naphthyl ring

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  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Naphthyl ring'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Naphthyl ring"

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Feng, Qi, Wenhui Huan, Jiali Wang, Jiadan Lu, Guowang Diao, and Yaqi Shan. "Crystal Structures and Optical Properties of Two Novel 1,3,5-Trisubstituted Pyrazoline Derivatives." Crystals 8, no. 12 (2018): 467. http://dx.doi.org/10.3390/cryst8120467.

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Two novel 1,3,5-trisubstituted pyrazoline derivatives—1-acetyl-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphthyl)-pyrazoline (2a) and 1-(4-nitrophenyl)-3-(4-methoxyphenyl)-5-(6-methoxy-2-naphtyl)-pyrazoline (2b)—were synthesized and their structures were determined by single crystal X-ray crystallography. Both of the two crystals exhibit twisted structures due to the large dihedral angles between the pyrazolinyl ring and the aromatic ring at the 5-position (88.09° for 2a and 71.26° for 2b). The optical–physical properties of the two compounds were investigated. The fluorescent emission of 2b arises
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Carter, Jennifer, Michael H. Fenwick, Wen-wei Huang, Vladimir V. Popik, and Thomas T. Tidwell. "Addition of the nitroxyl radical TEMPO to 1-naphthylketene: formation of an unusual adduct." Canadian Journal of Chemistry 77, no. 5-6 (1999): 806–9. http://dx.doi.org/10.1139/v99-043.

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1-Naphthylketene (2), generated by thermal Wolff-rearrangement, is trapped in situ by 2,2,6,6-tetramethylpiridinyloxy radical (TEMPO, TO·) to form the adduct 1-naphthCH(OT)CO2T (4), whose structure is confirmed by an X-ray determination. The 1H NMR spectrum of 4 displays three CH3 groups with very high field chemical shifts (δ 0.10-0.47), and this is attributed to the location of these groups in the shielding region above the π system of the naphthyl ring. At -40°C, doubling of most of the 1H NMR signals occurs, and this is attributed to a freezing out of two conformations differing by rotatio
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Markovic, O. T., D. S. Young, and N. S. Markovic. "Quinidine-induced inhibition of leukocyte esterases." Clinical Chemistry 34, no. 3 (1988): 518–24. http://dx.doi.org/10.1093/clinchem/34.3.518.

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Abstract We have demonstrated the feasibility of a system based on image processing to measure enzyme activity inside morphologically classified individual cells. When used in this system, quinidine inhibited naphthol AS-D chloroacetate esterase in polymorphonuclear neutrophils and alpha-naphthyl acetate esterase and alpha-naphthyl butyrate esterase in monocytes. These effects were dependent on the duration of exposure and on drug concentration. Dose-effect relationships were established and the concentration at which 50% inhibition (ID-50) occurred was used as a reference point to compare the
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Abdel-Hay, Karim M., Tarek S. Belal, Younis Abiedalla, et al. "Gas Chromatography–Mass Spectrometry (GC–MS) and Gas Chromatography–Infrared (GC–IR) Analyses of the Chloro-1-n-pentyl-3-(1-naphthoyl)-Indoles: Regioisomeric Cannabinoids." Applied Spectroscopy 73, no. 4 (2018): 433–43. http://dx.doi.org/10.1177/0003702818809998.

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The analytical differentiation of the indole ring regioisomeric chloro-1- n-pentyl-3-(1-naphthoyl)-indoles is described in this report. The regioisomeric chloroindole precursor compounds, N- n-pentyl chloroindole synthetic intermediates, and the target chloro-substituted naphthoylindoles showed the equivalent gas chromatographic elution order based on the position of chlorine substitution on the indole ring. The regioisomeric chloro-1- n-pentyl-3-(1-naphthoyl)-indoles yield electron ionization mass spectra having equivalent major fragments resulting from cleavage of the groups attached to the
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Selesi, Draženka, Nico Jehmlich, Martin von Bergen, et al. "Combined Genomic and Proteomic Approaches Identify Gene Clusters Involved in Anaerobic 2-Methylnaphthalene Degradation in the Sulfate-Reducing Enrichment Culture N47." Journal of Bacteriology 192, no. 1 (2009): 295–306. http://dx.doi.org/10.1128/jb.00874-09.

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ABSTRACT The highly enriched deltaproteobacterial culture N47 anaerobically oxidizes the polycyclic aromatic hydrocarbons naphthalene and 2-methylnaphthalene, with sulfate as the electron acceptor. Combined genome sequencing and liquid chromatography-tandem mass spectrometry-based shotgun proteome analyses were performed to identify genes and proteins involved in anaerobic aromatic catabolism. Proteome analysis of 2-methylnaphthalene-grown N47 cells resulted in the identification of putative enzymes catalyzing the anaerobic conversion of 2-methylnaphthalene to 2-naphthoyl coenzyme A (2-naphtho
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Duval, Maryne, Charlie Blons, Sonia Mallet-Ladeira, et al. "Cu-Catalyzed P–C bond formation/cleavage: straightforward synthesis/ring-expansion of strained cyclic phosphoniums." Dalton Transactions 49, no. 37 (2020): 13100–13109. http://dx.doi.org/10.1039/d0dt03059g.

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Raja, Rajamani, Mani Jayanthi, Perumal Rajakumar, and A. SubbiahPandi. "Crystal structure of 2,2′-bis[(2-chlorobenzyl)oxy]-1,1′-binaphthalene." Acta Crystallographica Section E Crystallographic Communications 71, no. 9 (2015): o637—o638. http://dx.doi.org/10.1107/s2056989015014322.

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In the title binaphthyl compound, C34H24Cl2O2, the dihedral angle between the two naphthyl ring systems (r.m.s. deviations = 0.016 and 0.035 Å) is 76.33 (8)°. The chlorophenyl rings make dihedral angles of 58.15 (12) and 76.21 (13)° with the naphthyl ring to which they are linked. The dihedral angle between the planes of the two chlorophenyl rings is 27.66 (16)°. In the crystal, C—H...O hydrogen bonds link molecules into chains propagating along [1-10]. The chains are linked by C—H...π interactions, forming a three-dimensional framework.
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Ji, Lei, Yun-Yan Kuang, Fen-Er Chen, and Min-Qin Chen. "2-(Cyclopentylsulfanyl)-6-(1-naphthoyl)pyrimidin-4(3H)-one." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): o1485—o1487. http://dx.doi.org/10.1107/s1600536806009378.

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In the structure of the title compound, C20H18N2O2S, the carbonyl group, the naphthyl ring system and the cyclopentyl ring are not in the plane of the pyrimidinyl ring. In the crystal structure, pairs of molecules are connected into dimers via N—H...O hydrogen bonding
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Zukerman-Schpector, Julio, Karinne E. Prado, Luccas L. Name, Rodrigo Cella, Mukesh M. Jotani, and Edward R. T. Tiekink. "2-[(4-Chlorophenyl)selanyl]-3,4-dihydro-2H-benzo[h]chromene-5,6-dione: crystal structure and Hirshfeld analysis." Acta Crystallographica Section E Crystallographic Communications 73, no. 6 (2017): 918–24. http://dx.doi.org/10.1107/s2056989017007605.

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The title organoselenium compound, C19H13ClO3Se {systematic name: 2-[(4-chlorophenyl)selanyl]-2H,3H,4H,5H,6H-naphtho[1,2-b]pyran-5,6-dione}, has the substituted 2-pyranyl ring in a half-chair conformation with the methylene-C atom bound to the methine-C atom being the flap atom. The dihedral angle between the two aromatic regions of the molecule is 9.96 (9)° and indicates a step-like conformation. An intramolecular Se...O interaction of 2.8122 (13) Å is noted. In the crystal, π–π contacts between naphthyl rings [inter-centroid distance = 3.7213 (12) Å] and between naphthyl and chlorobenzene ri
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Raphael Karikachery, Alice, Mehdi Masjedi, and Paul R. Sharp. "Thermal and Photochemical Ring-Bromination in Naphthyl-, Naphthdiyl-, and Dicarboximideperyl-Platinum Complexes." Organometallics 34, no. 9 (2015): 1635–42. http://dx.doi.org/10.1021/om501322f.

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Dissertations / Theses on the topic "Naphthyl ring"

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David, Hamon Catherine. "Synthese asymetrique de lactones : application a la serie des acides meviniques, inhibiteurs de la biosynthese du cholesterol." Poitiers, 1988. http://www.theses.fr/1988POIT2203.

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La compactine et la mevinoline sont des inhibiteurs de l'hmg-coa reductase, enzyme qui transforme l'hmg-coa en acide mevalonique dans une des premieres etapes de la biosynthese du cholesterol. Ces inhibiteurs sont caracterises par un squelette decalinique lie a un systeme lactonique dont la presence est indispensable a l'activite biologique. La preparation d'analogues necessite de disposer d'un synthon chiral qui peut etre obtenu a partir d'un sucre de la serie d. Plusieurs methodes de desoxygenation en positions 2 et 4 a partir de sucres divers (glucose, mannose, galactose) ont ete etudiees.
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Chang, Shih-chin, and 張仕金. "A synthesis of naphtho[1,2-b]furan from 1- naphthol via claisen rearrangement and ring-closing metathesis." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/u7kx5q.

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碩士<br>高雄醫學大學<br>藥學研究所碩士在職專班<br>91<br>1-Allyloxynaphthalene (2), prepared from 1-naphthol (1) and allyl bromide, was heated at high temperature（180℃）to undergo Claisen rearrengement to furnish 2-allyl-1-naphthol (3). Subsequently this naphthol (3) was reacted with excess 1,2-dichloroethane and aq. NaOH in the presence of tetrabutylammonium bromide as phase transfer catalyst to undergo two phases reaction to give 2-allyl-1-(2-chloroethoxy)- naphthalene] (4). By treating compound (4) with potassium tert-butoxide to undergo isomerization of allyl group, and dehydrochlorination in one pot, gave 2-(
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Wang, Kuanyu, and 王冠喻. "Syntheses of 1-Naphthol Derivatives via Ring Expansion of 1-Acyl-1-indanol Structures." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/26660249423965797721.

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碩士<br>國立暨南國際大學<br>應用化學系<br>99<br>The goal of this paper is to synthesize 1-naphthol derivatives, to use ring expansion reaction. And, we also changed formerly obtained the product using the metal catalyst method. First, a Wittig reaction of indanone molecules with benzyltriphenyl-phosphoniumchloride, in the presence of butyl lithium, furnished 1-(phenylmethylene)-indane 1. Then, dihydroxylation of compound 1 with Osmium tetroxide and T.M.O reaction gave a diol product, in which the secondary hydroxyl group was further oxidized to a carbonyl group, and 1-acyl-1-indanol 3 was obtained. Treatment
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Book chapters on the topic "Naphthyl ring"

1

Rasmussen, Seth C. "Polyisothianaphthene and the Birth of Low-Bandgap Polymers." In The Origins and Early History of Conjugated Organic Polymers. Oxford University PressNew York, NY, 2025. https://doi.org/10.1093/9780197638194.003.0007.

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Abstract This chapter introduces the concept of low-bandgap polymers, formally defined as those conjugated polymers with bandgaps below 1.5 eV. Unlike the more conventional conjugated polymers presented in earlier chapters, the earliest low-bandgap polymers utilized fused-ring monomers, with the introduction of polyisothianaphthene (PITN) by Wudl and Heeger in 1984. Such fused-ring monomers provide a method for enhancing the quinoid nature of the polymer in the ground state, thus resulting in diminished bandgaps. The history of PITN is covered over the period of 1984 to 1993. Next, the develop
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Ulrich, H. "From Phenols and 1-Nitroso-2-naphthol." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00134.

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Ulrich, H. "From 4,8-Bis(alkylamino)naphtho-1,5-quinones." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00281.

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von Angerer, S. "Synthesis of Naphth[1,8-]oxepinium Salts." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00996.

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Pindur, U., and T. Lemster. "Ring Closure of 2-Pyridinium-Substituted Naphtho-1,4-quinones with Nitromethane." In Quinones and Heteroatom Analogues. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-028-00558.

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Döpp, H., and D. Döpp. "Reactions of 2-Methyl Substituents of Naphtho[1,8-,][1,2,3]triazine." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00486.

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Meigh, J. P. K. "From 2-(1a,2,7,7a-Tetrahydro-1-naphtho[2,3-]aziren-1-yl)-1-isoindole-1,3(2)-dione." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-01327.

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