To see the other types of publications on this topic, follow the link: Naphthoic.

Journal articles on the topic 'Naphthoic'

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

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Naphthoic.'

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.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Song, Yuan Jun, Chun Zhang, and Jing Jing Li. "The Purification and Analysis of 6 - Hydroxy -2 - Naphthoic Acid." Advanced Materials Research 602-604 (December 2012): 1391–95. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1391.

Full text
Abstract:
When synthetizing 2 - hydroxy - 6 - naphthoic acid with 2 - naphthol as raw material , we use a variety of methods to characterize and analyze the intermediates and target product . Through melting point method, the melting point of HNA we synthetized is showed to be slightly lower than standard samples. High performance liquid chromatographic shows that the purity of 2 - methoxy - 6 - naphthoic acid 2 - hydroxy - 6 - naphthoic acid reach up to 81.98% and 99.0% respectively. The purity of 2-hydroxyl-6-naphthoic acid is showed to be 97.1% with ultraviolet spectrophotometry.
APA, Harvard, Vancouver, ISO, and other styles
2

Meckenstock, Rainer U., Eva Annweiler, Walter Michaelis, Hans H. Richnow, and Bernhard Schink. "Anaerobic Naphthalene Degradation by a Sulfate-Reducing Enrichment Culture." Applied and Environmental Microbiology 66, no. 7 (2000): 2743–47. http://dx.doi.org/10.1128/aem.66.7.2743-2747.2000.

Full text
Abstract:
ABSTRACT Anaerobic naphthalene degradation by a sulfate-reducing enrichment culture was studied by substrate utilization tests and identification of metabolites by gas chromatography-mass spectrometry. In substrate utilization tests, the culture was able to oxidize naphthalene, 2-methylnaphthalene, 1- and 2-naphthoic acids, phenylacetic acid, benzoic acid, cyclohexanecarboxylic acid, and cyclohex-1-ene-carboxylic acid with sulfate as the electron acceptor. Neither hydroxylated 1- or 2-naphthoic acid derivatives and 1- or 2-naphthol nor the monoaromatic compounds ortho-phthalic acid, 2-carboxy-
APA, Harvard, Vancouver, ISO, and other styles
3

Kricheldorf, Hans R., and Thorsten Adebahr. "Whiskers 9. Synthesis of whisker-like crystals of poly(6-hydroxy-2-naphthoic acid)." High Performance Polymers 6, no. 2 (1994): 109–21. http://dx.doi.org/10.1177/095400839400600202.

Full text
Abstract:
Poly(6-hydroxy-2-naphthoic acid), poly(2,6-HNA), was synthesized by three different methods: polycondensation of 6-acetoxy-2-naphthoic acid, or its trimethylsilyl ester, and polycondensation of free 6-hydroxy-2-naphthoic acid with acetic arnhydride in an 'one-pot procedure'. The last method gave whiskers only when a monomer of high purity was used. Different temperatures (350 or 400C) and reaction media tMarlotherm-S, Marlotherm-SCB or Santotherm) were applied. Furthermore, the reaction time and monomer concentration were varied. 6-Acetoxy-2-naphthoic acid yielded whiskers only at concentratio
APA, Harvard, Vancouver, ISO, and other styles
4

Pařík, Patrik, Jitka Wolfová, and Miroslav Ludwig. "Dissociation of Naphthoic Acids in Non-Aqueous Media. Comparison of Benzene and Naphthalene Skeletons." Collection of Czechoslovak Chemical Communications 65, no. 3 (2000): 385–94. http://dx.doi.org/10.1135/cccc20000385.

Full text
Abstract:
Seven monosubstituted 1-naphthoic acids were synthesized by new or modified procedures, and their dissociation constants were measured potentiometrically at 25 °C in methanol, acetonitrile, dimethylformamide, and pyridine. Dissociation constants of these along with thirteen substituted 1-naphthoic acids and twenty-five substituted 2-naphthoic acids previously studied were measured at 25 °C in ethanol and dimethyl sulfoxide. The pKHA values of 3- and 4-substituted 1-naphthoic acids were treated by simple linear regression and principal component analysis, and the results were used for compariso
APA, Harvard, Vancouver, ISO, and other styles
5

Shteinberg, Leon. "SYNTHESIS OF 3-HYDROXY-2-NAPHTHOIC ACID ANILIDE CATALYZED BY PHOSPHORUS (III) COMPOUNDS IN VARIOUS MEDIA." Ukrainian Chemistry Journal 89, no. 3 (2023): 55–69. http://dx.doi.org/10.33609/2708-129x.89.03.2023.55-69.

Full text
Abstract:
Catalysis with phosphorus P(III) compo­unds (phosphorus trichloride and phospho­rous acid) in the acylation of aniline with 3=hydroxy=2=naphthoic acid in various media (toluene, octane, chlorobenzene, para=­xylene, ortho=xylene, ortho=chlorotoluene, mesitylene, pseudocumene, n.=deсan, ortho= di­chlo­ro­benzene, mixtures of ortho=xylene with nitrobenzene) upon boiling and vigorous distillation of water leads to the formation of 3=hydroxy=2=naphthoic acid anilide. With an increase in the reaction temperature in the range from 111 (toluene) to 170 °C (pseudo cumene), a monotonous increase in the
APA, Harvard, Vancouver, ISO, and other styles
6

Annweiler, Eva, Walter Michaelis, and Rainer U. Meckenstock. "Identical Ring Cleavage Products during Anaerobic Degradation of Naphthalene, 2-Methylnaphthalene, and Tetralin Indicate a New Metabolic Pathway." Applied and Environmental Microbiology 68, no. 2 (2002): 852–58. http://dx.doi.org/10.1128/aem.68.2.852-858.2002.

Full text
Abstract:
ABSTRACT Anaerobic degradation of naphthalene, 2-methylnaphthalene, and tetralin (1,2,3,4-tetrahydronaphthalene) was investigated with a sulfate-reducing enrichment culture obtained from a contaminated aquifer. Degradation studies with tetralin revealed 5,6,7,8-tetrahydro-2-naphthoic acid as a major metabolite indicating activation by addition of a C1 unit to tetralin, comparable to the formation of 2-naphthoic acid in anaerobic naphthalene degradation. The activation reaction was specific for the aromatic ring of tetralin; 1,2,3,4-tetrahydro-2-naphthoic acid was not detected. The reduced 2-na
APA, Harvard, Vancouver, ISO, and other styles
7

Shteinberg, Leon. "CATALYSIS BY PHOSPHORUS (III) COMPOUNDS IN THE SYNTHESIS OF ARYLAMIDES OF 3-OXY-2-NAPH-THOIIC ACID." Ukrainian Chemistry Journal 89, no. 7 (2023): 8–25. http://dx.doi.org/10.33609/2708-129x.89.07.2023.8-25.

Full text
Abstract:
Arylamides of 3-hydroxy-2-naphthoic acid are widely used in the synthesis of dyes and pigments, as pesticides and medicines. Therefore, the development of new methods for their synthesis is an urgent task.
 It has been found that catalysis by phosphorus trichloride and/or phosphorous acid (2 mol %) of acylation in refluxing ortho-xylene or ortho-chlorotoluene of arylamines with 3-hydroxy-2-naphthoic acid leads to the formation of the corresponding arylamides with a high, and often almost quantitatively yield. Substituted anilines, containing electron-bearing and electron-withdrawing subst
APA, Harvard, Vancouver, ISO, and other styles
8

Annweiler, Eva, Arne Materna, Michael Safinowski, et al. "Anaerobic Degradation of 2-Methylnaphthalene by a Sulfate-Reducing Enrichment Culture." Applied and Environmental Microbiology 66, no. 12 (2000): 5329–33. http://dx.doi.org/10.1128/aem.66.12.5329-5333.2000.

Full text
Abstract:
ABSTRACT Anaerobic degradation of 2-methylnaphthalene was investigated with a sulfate-reducing enrichment culture. Metabolite analyses revealed two groups of degradation products. The first group comprised two succinic acid adducts which were identified as naphthyl-2-methyl-succinic acid and naphthyl-2-methylene-succinic acid by comparison with chemically synthesized reference compounds. Naphthyl-2-methyl-succinic acid accumulated to 0.5 μM in culture supernatants. Production of naphthyl-2-methyl-succinic acid was analyzed in enzyme assays with dense cell suspensions. The conversion of 2-methy
APA, Harvard, Vancouver, ISO, and other styles
9

Ptáček, Aleš, and Jiří Kulič. "Effect of OH- Concentration on Alkaline Hydrolysis of Diphenyl (4-Nitrophenyl) Phosphate Catalyzed by 2-Iodosobenzoic and 3-Iodoso-2-naphthoic Acids." Collection of Czechoslovak Chemical Communications 59, no. 5 (1994): 1137–44. http://dx.doi.org/10.1135/cccc19941137.

Full text
Abstract:
The hydrolysis of diphenyl (4-nitrophenyl) phosphate catalyzed by 2-iodosobenzoic and 3-iodoso-2-naphthoic acids has been studied at different pH values in the presence of hexadecyltrimethylammonium bromide as a micellar agent. It was found that 3-iodoso-2-naphthoic acid is better catalyst than 2-iodosobenzoic acid. At amounts of the acids higher than stoichiometric, the reaction is independent of pH in the 8.00 to 10.00 region while on using substoichiometric amounts, the reaction rate depends on OH- ion concentration only when the acid to diphenyl (4-nitrophenyl) phosphate molar ratio amount
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Yang, Qiang Li, Xian Feng Gong, Xue Ling Zhao, and Yu Zhang. "Study on Synthesis of 2-Hydroxy-6-Naphthoic Acid from 2-Naphthol and Improve the Synthetic Process." Advanced Materials Research 634-638 (January 2013): 2044–48. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2044.

Full text
Abstract:
2-Hydroxy-6-naphthoic acid is an main raw material for the synthesis of polyaromatic ester, it was synthesized from 2-Naphthol by methoxylation, bromization, grignard reaction and demethylation before recrystallization (C2H5OH:H2O=2.8:1 m/m) with an overall yield of 78.5% and content of 99.1%. Furthermore, the results showed that the 6-bromo-2-methoxynaphthalene was prepared using Sn as reducing agent with 96.2% of the yield which is higher than 6-bromo-2-methoxynaphthalene was prepared using solid carbon dioxide and grignard reagent with 23.8% of the yield.
APA, Harvard, Vancouver, ISO, and other styles
11

Shteinberg, Leon. "СATALYTIC METHOD FOR THE SYNTHESIS OF 3-HYDROXY-2-NAPHTOIC ACID ANILIDE". Ukrainian Chemistry Journal 88, № 10 (2022): 91–103. http://dx.doi.org/10.33609/2708-129x.88.10.2022.91-103.

Full text
Abstract:
Arylamides of 3-hydroxy-2-naphthoic acid are widely used in the production of organic azo pigments, as medicines and pesticides.
 Titanium tetrachloride, tetrabutoxytitanium and polybutoxytitanates, previously used for the synthesis of the most important of them., 3-hydroxy-2-naphthoic acid anilide by boiling of the latter in aniline (184 °C), proved to be ineffective as catalysts in carrying out this reaction in ortho-xylene.
 The study of the reasons for this inhibition of catalysis showed that it can be associated with the interaction of Ti(4+) with the hydroxy group of 3-hydroxy-
APA, Harvard, Vancouver, ISO, and other styles
12

Stringfellow, William T., and Michael D. Aitken. "Comparative physiology of phenanthrene degradation by two dissimilar pseudomonads isolated from a creosote-contaminated soil." Canadian Journal of Microbiology 40, no. 6 (1994): 432–38. http://dx.doi.org/10.1139/m94-071.

Full text
Abstract:
Two species of bacteria, identified as Pseudomonas stutzeri (P-16) and Pseudomonas saccharophila (P-15) by fatty acid methyl ester analysis, were found in a phenanthrene enrichment culture of a creosote-contaminated soil. The organisms are shown to be physiologically dissimilar, and their genetic relatedness is discussed. Phenanthrene degradation by both organisms followed Michaelis–Menten kinetics, allowing for the determination of half-saturation (Ks) and maximum activity coefficients, using nonlinear regression. Both organisms utilized kinetically similar enzymes for phenanthrene uptake and
APA, Harvard, Vancouver, ISO, and other styles
13

Shteinberg, Leon. "CATALYSIS BY PHOSPHORUS AND SILICON COMPOUNDS IN THE SYNTHESIS OF OXYNAPHTOIC ACID ANILIDES." Ukrainian Chemistry Journal 89, no. 1 (2023): 46–59. http://dx.doi.org/10.33609/2708-129x.89.01.2023.46-59.

Full text
Abstract:
Catalysis of the acylation of aniline with 3-­hydroxy-2-naphthoic, 1-hydroxy-2-naphthoic, 2-hydroxy-1-naphthoic and 1-hydroxy-4-naphthoic acids by phosphorus P(III) and silicon Si(IV) compounds leads to the formation anilides of the corresponding hydroxy­naphthoic acids under mild conditions (ortho-xylene, 146.5–147 °C) in almost quantitative yield.
 Among P(III) phosphorus trichloride and tribromide; phosphorous, 1-hydroxyethyli­de­ne-di­phos­phonic, pyrophosphorous and me­ta­phos­phorous acids; trimethyl-, dimethyl- and diethylphosphites; phosph(III)azan proved to be active catalysts; a
APA, Harvard, Vancouver, ISO, and other styles
14

Fitzgerald, L. J., and R. E. Gerkin. "Redetermination of the structures of 1-naphthoic acid and 2-naphthoic acid." Acta Crystallographica Section C Crystal Structure Communications 49, no. 11 (1993): 1952–58. http://dx.doi.org/10.1107/s0108270193002641.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Nath, Jayanta Kumar. "Synthesis, crystal structure, and Hirshfeld surface analysis of a cubane-type tetranuclear polyoxotitanate cluster." European Journal of Chemistry 16, no. 2 (2025): 146–53. https://doi.org/10.5155/eurjchem.16.2.146-153.2646.

Full text
Abstract:
A cubane-type tetranuclear polyoxotitanate cluster derived from 8-(isopropoxycarbonyl)-1-naphthoic acid is reported which is synthesized under reflux conditions in isopropanol (HOiPr). The ligand 8-(isopropoxycarbonyl)-1-naphthoic acid (INA) was generated in situ from 1,8-naphthalic anhydride and isopropyl alcohol in the reaction mixture where one of the carboxylate groups of 1,8-naphthalene dicarboxylic acid (generated from the ring opening reaction of 1,8-naphthalic anhydride) forms isopropyl ester by reacting with solvent isopropoxide. The solid-state structural elucidation of the cluster i
APA, Harvard, Vancouver, ISO, and other styles
16

Casassas, Enric, Miquel Esteban, and Santiago Alier. "Pulse polarographic study of the behaviour of some o,o'-dihydroxyazo-compounds." Collection of Czechoslovak Chemical Communications 54, no. 5 (1989): 1219–26. http://dx.doi.org/10.1135/cccc19891219.

Full text
Abstract:
The reduction of several o,o'-dihydroxyazo-compounds is studied by means of pulse polarographic techniques (DPP, NPP and RPP). The compounds studied are the following: 2-(2'-hydroxyphenylazo)-phenol (o,o'-dihydroxyazobenzene), 1-(2'-hydroxy-1'-naphthylazo)-2-naphthol-4-sulphonic acid (calcon or Eriochrome Blue Black R), 1-(2'-hydroxy-4'-sulpho-1'-naphthylazo)-2-hydroxy-3-naphthoic acid (calcon carboxylic acid), and 1-(1'-hydroxy-2'-naphthylazo)-6-nitro-2-naphthol-4-sulphonic acid (Eriochrome Black T). Correlations between Ip and Epand experimental variables (pH, T, conc.) and instrumental para
APA, Harvard, Vancouver, ISO, and other styles
17

Harp, Bhakti Petigara, and Julie N. Barrows. "Reversed-Phase Liquid Chromatographic Determination of Two Manufacturing Intermediates in D&C Red No. 34 and Its Lakes." Journal of AOAC INTERNATIONAL 92, no. 6 (2009): 1639–43. http://dx.doi.org/10.1093/jaoac/92.6.1639.

Full text
Abstract:
Abstract A reversed-phase LC method was developed to determine two manufacturing intermediates in the monosulfo monoazo color additive D&C Red No. 34 and its lakes. The analytes are 2-amino-1-naphthalenesulfonic acid (Tobias acid) and 3-hydroxy-2-naphthalenecarboxylic acid (3-hydroxy-2-naphthoic acid). This method can be used for batch certification of the color additives by the U.S. Food and Drug Administration to ensure that each lot meets published specifications for coloring drugs and cosmetics. The new method uses lithium oxalate in methanolwater to dissolve the color additives for an
APA, Harvard, Vancouver, ISO, and other styles
18

Deck, Lorraine, Jacob Greenberg, Lisa Whalen, David Vander Jagt, and Robert Royer. "Synthesis of Naphthoic Acids as Potential Anticancer Agents." Synlett 30, no. 01 (2018): 104–8. http://dx.doi.org/10.1055/s-0037-1611342.

Full text
Abstract:
As part of ongoing research to investigate structural requirements for lactate dehydrogenase inhibition by highly substituted naphthoic acids, nine new aryl-substituted dihydroxynaphthoic acids were synthesized from three known precursors. Described here are efficient preparations of the 1-naphthoic acid target compounds by using Suzuki coupling reactions, formylations, oxidations, and demethylations. Lactate dehydrogenase inhibition studies conducted with five of the compounds revealed values of the inhibitory constant K i in the low micromolar range.
APA, Harvard, Vancouver, ISO, and other styles
19

Shteinberg, Leon. "THE INFLUENCE OF THE CONCENTRATION OF CHLORINE-CONTAINING CONDENSING AGENTS IN THE SYNTHESIS OF CARBOXYLIC ACID ANILIDESТ". Ukrainian Chemistry Journal 89, № 5 (2023): 37–52. http://dx.doi.org/10.33609/2708-129x.89.05.2023.37-52.

Full text
Abstract:
Chlorine-containing condensing agents (PCl3, TiCl4, SiCl4) are widely used in the synthesis of carboxylic acid arylamides by the reaction of arylamines with carboxylic acids in stoichiometric amounts, and often in excess (40–150 mol % relative to the latter). To find the optimal amount of the condensing agent used, the acylation of aniline with 3-hydroxy-2-naphthoic acid in boiling ortho-xylene was studied in the PCl3 concentration range of 0–10 mol % from 3-hydroxy-2-naphthoic acid. It has been established that phosphorus tri-chlorochloride plays the role of a condensing agent and a catalyst,
APA, Harvard, Vancouver, ISO, and other styles
20

Song, Yuan Jun, Yan Wei Li, Bao Qing Pan, and Hao Nan Song. "Synthesis of 2-Acetoxy-6-Naphthoic Acid with P-Methylbenzenesulfonic Acid as Catalyst." Applied Mechanics and Materials 152-154 (January 2012): 306–11. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.306.

Full text
Abstract:
2-acetoxy-6-naphthoic acid (ANA) was synthesized in the presence of 2-hydroxy -6-naphthoic acid (HNA) and acetic anhydride (CH3CO)2O with toluenesulfonic acid (PTSA) as catalyst. The effects of reactant ratio, temperature, time were investigated in the acetylation process. 1H-NMR、13C-NMR、FT-IR、HPLC measurements indicate the optimal acetylation reaction condition when the ratio of HNA: (CH3CO)2O : PTSA are 1: 2.3:0.025 under the temperature at 90~95°C for 40min.
APA, Harvard, Vancouver, ISO, and other styles
21

Blackburn, A. C., and R. E. Gerkin. "1,4-Dimethoxy-2-naphthoic Acid." Acta Crystallographica Section C Crystal Structure Communications 53, no. 10 (1997): 1425–27. http://dx.doi.org/10.1107/s0108270197008299.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Song, Yun-Sung, and Soon W. Lee. "6-Nicotinamido-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 68, no. 7 (2012): o1978. http://dx.doi.org/10.1107/s1600536812024051.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Blackburn, A. C., L. J. Fitzgerald, and R. E. Gerkin. "2-Naphthoic Acid at 153K." Acta Crystallographica Section C Crystal Structure Communications 52, no. 11 (1996): 2862–64. http://dx.doi.org/10.1107/s0108270196008876.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Souza, Bruno S., Ramon Vitto, Faruk Nome, Anthony J. Kirby, and Adailton J. Bortoluzzi. "3-Acetoxy-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 66, no. 11 (2010): o2848. http://dx.doi.org/10.1107/s1600536810040365.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Pařík, Patrik, and Miroslav Ludwig. "Acid-Base Properties of Substituted Naphthoic Acids in Nonaqueous Media." Collection of Czechoslovak Chemical Communications 62, no. 11 (1997): 1737–46. http://dx.doi.org/10.1135/cccc19971737.

Full text
Abstract:
Thirteen substituted 1-naphthoic acids have been prepared and their dissociation constants, along with those of twenty-five substituted 2-naphthoic acids, have been measured potentiometrically in methanol, N,N-dimethylformamide, pyridine, and acetonitrile. The pKHA values obtained have been treated by linear regression using four sets of substituent constants. The experimental data have also been interpreted by statistical methods using latent variables. The first latent variable calculated by these methods can be used as a new set of substituent constants for describing substituent effects in
APA, Harvard, Vancouver, ISO, and other styles
26

FITZGERALD, L. J., and R. E. GERKIN. "ChemInform Abstract: Redetermination of the Structures of 1-Naphthoic Acid and 2-Naphthoic Acid." ChemInform 25, no. 7 (2010): no. http://dx.doi.org/10.1002/chin.199407036.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Pal Chowdhury, Piyali, Soumik Basu, Arindam Dutta, and Tapan K. Dutta. "Functional Characterization of a Novel Member of the Amidohydrolase 2 Protein Family, 2-Hydroxy-1-Naphthoic Acid Nonoxidative Decarboxylase from Burkholderia sp. Strain BC1." Journal of Bacteriology 198, no. 12 (2016): 1755–63. http://dx.doi.org/10.1128/jb.00250-16.

Full text
Abstract:
ABSTRACTThe gene encoding a nonoxidative decarboxylase capable of catalyzing the transformation of 2-hydroxy-1-naphthoic acid (2H1NA) to 2-naphthol was identified, recombinantly expressed, and purified to homogeneity. The putative gene sequence of the decarboxylase (hndA) encodes a 316-amino-acid protein (HndA) with a predicted molecular mass of 34 kDa. HndA exhibited high identity with uncharacterized amidohydrolase 2 proteins of variousBurkholderiaspecies, whereas it showed a modest 27% identity with γ-resorcylate decarboxylase, a well-characterized nonoxidative decarboxylase belonging to th
APA, Harvard, Vancouver, ISO, and other styles
28

Khokhar, Vaishali, and Siddharth Pandey. "Prototropic forms of hydroxy derivatives of naphthoic acid within deep eutectic solvents." Physical Chemistry Chemical Physics 23, no. 15 (2021): 9096–108. http://dx.doi.org/10.1039/d1cp00845e.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Mane, Ramchandra Bhimrao, and Abhijit Jaysingrao Kadam. "A New Synthesis of Occidol." Collection of Czechoslovak Chemical Communications 64, no. 3 (1999): 533–38. http://dx.doi.org/10.1135/cccc19990533.

Full text
Abstract:
Sodium borohydride reduction of 5,8-dimethyl-3,4-dihydronaphthalen-1-(2H)-one (4) yielded 5,8-dimethyl-1,2,3,4-tetrahydro-1-naphthol (5). The tetralol 5 on Vilsmeier-Haack reaction with N,N-dimethylacetamide yielded 1-(5,8-dimethyl-3,4-dihydro-2-naphthyl)ethan-1-one (7) which on hydrogenation over Pd/C afforded 1-(5,8-dimethyl-1,2,3,4-tetrahydro-2-naphthyl)ethan-1-one (8). The tetralol 5 on Vilsmeier-Haack formylation gave 5,8-dimethyl-3,4-dihydro-2-naphthaldehyde (9) which on reduction with lithium aluminium hydride followed by oxidation with the Jones reagent furnished 5,8-dimethyl-1,2,3,4-t
APA, Harvard, Vancouver, ISO, and other styles
30

Gupta, Akul Sen, Kamaldeep Paul, and Vijay Luxami. "A new ‘Turn-on’ PET-CHEF based fluorescent sensor for Al3+ and CN− ions: applications in real samples." Analytical Methods 10, no. 9 (2018): 983–90. http://dx.doi.org/10.1039/c7ay02779f.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Joshi, Deepti, and T. K. Joshi. "Synthesis and Characterization of Some Trivalent and Tetravalent Derivatives of 2- Hydroxy-1-naphthoic Acid." E-Journal of Chemistry 1, no. 2 (2004): 110–14. http://dx.doi.org/10.1155/2004/405086.

Full text
Abstract:
The trivalent derivatives (B, Al, As, Sb & Fe) and tetravalent derivatives (Si, Ti & Se) of 2-hydroxy-1-naphthoic acid have been prepared by the interaction of their corresponding isopropoxide with letter in different molar ratioviz. 1:3 &1:4 in benzene medium. The prepared compounds generally obtained as coloured solids and amongst them those containing isopropoxy groups were found to be hygroscopic. All these compound were characterized by azeotrope and elemental analysis as well as by IR, PMR and mass spectral measurements. These spectral data have facilitated in elucidating the
APA, Harvard, Vancouver, ISO, and other styles
32

Deveryshetty, Jaigeeth, and Prashant S. Phale. "Biodegradation of phenanthrene by Pseudomonas sp. strain PPD: purification and characterization of 1-hydroxy-2-naphthoic acid dioxygenase." Microbiology 155, no. 9 (2009): 3083–91. http://dx.doi.org/10.1099/mic.0.030460-0.

Full text
Abstract:
Pseudomonas sp. strain PPD can metabolize phenanthrene as the sole source of carbon and energy via the ‘phthalic acid’ route. The key enzyme, 1-hydroxy-2-naphthoic acid dioxygenase (1-HNDO, EC 1.13.11.38), was purified to homogeneity using a 3-hydroxy-2-naphthoic acid (3-H2NA)-affinity matrix. The enzyme was a homotetramer with a native molecular mass of 160 kDa and subunit molecular mass of ∼39 kDa. It required Fe(II) as the cofactor and was specific for 1-hydroxy-2-naphthoic acid (1-H2NA), with K m 13.5 μM and V max 114 μmol min−1 mg−1. 1-HNDO failed to show activity with gentisic acid, sali
APA, Harvard, Vancouver, ISO, and other styles
33

Ahn, So-Jin, and Yong-Kul Lee. "Factors influencing the formation of 2-hydroxy-6-naphthoic acid from carboxylation of naphthol." Journal of Industrial and Engineering Chemistry 19, no. 6 (2013): 2060–63. http://dx.doi.org/10.1016/j.jiec.2013.03.016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Madeley, Lee G., Demetrius C. Levendis, and Andreas Lemmerer. "Isonicotinamide–2-naphthoic acid (1/1)." Acta Crystallographica Section E Structure Reports Online 67, no. 12 (2011): o3440. http://dx.doi.org/10.1107/s1600536811050057.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Pande, Archana, and Yogendra N. Shukla. "Naphthoic acid derivative from Valeriana wallichii." Phytochemistry 32, no. 5 (1993): 1350–51. http://dx.doi.org/10.1016/s0031-9422(00)95120-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Thenmozhi, S., J. ArulClement, A. K. MohanaKrishnan, and A. SubbiahPandi. "3-(2,4,6-Trimethylbenzoyl)-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 66, no. 11 (2010): o2794. http://dx.doi.org/10.1107/s1600536810040183.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Liu, Xiao-Gang, and Tao Chen. "6-Amino-2-naphthoic acid monohydrate." Acta Crystallographica Section E Structure Reports Online 63, no. 2 (2007): o597—o598. http://dx.doi.org/10.1107/s1600536807000116.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Fukuyama, Takahide, Taiki Sugimori, Shinji Maetani, and Ilhyong Ryu. "Synthesis of perinaphthenones through rhodium-catalyzed dehydrative annulation of 1-naphthoic acids with alkynes." Organic & Biomolecular Chemistry 16, no. 41 (2018): 7583–87. http://dx.doi.org/10.1039/c8ob01453a.

Full text
Abstract:
A convenient method for the synthesis of perinaphthenones via rhodium-catalyzed dehydrative annulation of naphthoic acids with alkynes, which gave good to high yields of perinaphthenones, was developed.
APA, Harvard, Vancouver, ISO, and other styles
39

Chowdhury, Piyali Pal, Jayita Sarkar, Soumik Basu, and Tapan K. Dutta. "Metabolism of 2-hydroxy-1-naphthoic acid and naphthalene via gentisic acid by distinctly different sets of enzymes in Burkholderia sp. strain BC1." Microbiology 160, no. 5 (2014): 892–902. http://dx.doi.org/10.1099/mic.0.077495-0.

Full text
Abstract:
Burkholderia sp. strain BC1, a soil bacterium, isolated from a naphthalene balls manufacturing waste disposal site, is capable of utilizing 2-hydroxy-1-naphthoic acid (2H1NA) and naphthalene individually as the sole source of carbon and energy. To deduce the pathway for degradation of 2H1NA, metabolites isolated from resting cell culture were identified by a combination of chromatographic and spectrometric analyses. Characterization of metabolic intermediates, oxygen uptake studies and enzyme activities revealed that strain BC1 degrades 2H1NA via 2-naphthol, 1,2,6-trihydroxy-1,2-dihydronaphtha
APA, Harvard, Vancouver, ISO, and other styles
40

Pang, Yanyan, Peiqi Xing, Xiujuan Geng, Yujing Zhu, Faqian Liu та Lei Wang. "Supramolecular assemblies of 2-hydroxy-3-naphthoic acid and N-heterocycles via various strong hydrogen bonds and weak X⋯π (X = C–H, π) interactions". RSC Advances 5, № 51 (2015): 40912–23. http://dx.doi.org/10.1039/c5ra03837e.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Kaliszczak, Magdalena, Pierrick Durand, Emmanuel Wenger, et al. "Investigation of the Mechanism of Cocrystal Formation at the Polarized Liquid-Liquid Interface." ECS Meeting Abstracts MA2022-01, no. 43 (2022): 1852. http://dx.doi.org/10.1149/ma2022-01431852mtgabs.

Full text
Abstract:
The cocrystals of two reagents of mismatch solubility, hydrophilic caffeine and lipophilic 1-hydroxy-2-naphthoic acid, were obtained at a water-oil interface. 1 By analysing the product collected at the phase interface by X-ray diffraction and Raman spectroscopy, we confirmed that we obtained the molecular cocrystals of caffeine and 1-hydroxy-2-naphthoic acid, free of starting reagents and solvents. Polarisation of the interface allowed the electrochemical control of the cocrystallisation process: for non-polarised interfaces, a mixture of phase I and II cocrystals were obtained, whereas cocry
APA, Harvard, Vancouver, ISO, and other styles
42

Liu, Xiaochun, Haifeng Zhao, Linfeng Wei, et al. "Ligand-modulated electron transfer rates from CsPbBr3 nanocrystals to titanium dioxide." Nanophotonics 10, no. 8 (2020): 1967–75. http://dx.doi.org/10.1515/nanoph-2020-0631.

Full text
Abstract:
Abstract In most perovskite nanocrystal (PeNC)-based optoelectronic and photonic applications, surface ligands inevitably lead to a donor–bridge–acceptor charge transfer configuration. In this article, we demonstrate successful modulation of electron transfer (ET) rates from all-inorganic CsPbBr3 PeNCs to mesoporous titanium dioxide films, by using different surface ligands including single alkyl chain oleic acid and oleylamine, cross-linked insulating (3-aminopropyl)triethoxysilane and aromatic naphthoic acid molecules as the ligand-bridge. We systematically investigated the ET process throug
APA, Harvard, Vancouver, ISO, and other styles
43

Abdel-Kader, Nora S., Samir A. Abdel-Latif, Aida L. El-Ansary, and Amira G. Sayed. "Combined experimental, DFT theoretical calculations and biological activity of sulfaclozine azo dye with 1-hydroxy-2-naphthoic acid and its complexes with some metal ions." New Journal of Chemistry 43, no. 44 (2019): 17466–85. http://dx.doi.org/10.1039/c9nj04594e.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Zhang, Min, Zhangyi Fu, Anping Luo, et al. "Palladium-catalyzed C8–H arylation and annulation of 1-naphthalene carboxylic acid derivatives with aryl iodides." Organic Chemistry Frontiers 8, no. 13 (2021): 3274–79. http://dx.doi.org/10.1039/d1qo00428j.

Full text
Abstract:
Disclosed herein is palladium-catalyzed C8–H arylation and annulation of 1-naphthoic acid derivatives with aryl iodides in a low reactant molar ratio via an electrophilic aromatic substitution (S<sub>E</sub>Ar) process.
APA, Harvard, Vancouver, ISO, and other styles
45

Chen, Jie, Tianyu Wang, and Minghua Liu. "Selective shrinkage and separation of isomeric naphthoic acids via supramolecular gelation." Chemical Communications 52, no. 75 (2016): 11277–80. http://dx.doi.org/10.1039/c6cc05968f.

Full text
Abstract:
The isomeric non-gelator molecules 1- or 2-naphthoic acid (NA1, or NA2) were found to form two-component supramolecular gels with an amphiphilic gelator LHC18, and the NA2/LHC18 gel underwent shrinking at room temperature.
APA, Harvard, Vancouver, ISO, and other styles
46

Kolkmann, Rainer, and Eckhard Leistner. "4-(2′-Carboxyphenyl)-4-oxobutyryl Coenzyme A Ester, an Intermediate in Vitamin K2 (Menaquinone) Biosynthesis." Zeitschrift für Naturforschung C 42, no. 11-12 (1987): 1207–14. http://dx.doi.org/10.1515/znc-1987-11-1212.

Full text
Abstract:
Enzyme preparations from Mycobacterium phlei, Escherichia coli and Galium mollugo cell suspension cultures were incubated in the presence of 4-(2′-carboxyphenyl)-4-oxobutyrate (i.e. o- succinylbenzoic acid. OSB. 1). ATP. coenzyme A and Mg2+. The main product isolated from the incubation mixture was 4-(2′-carboxyphenyl)-4-oxobutyryl coenzyme A ester (2) as determined by comparison with synthetic coenzyme A esters. Synthetic and enzymically formed 4-(2′-car-boxyphenyl)-4-oxobutyryl coenzyme A ester (2) was shown to be enzymically converted to an intermediate in vitamin K2 biosynthesis viz. 1.4-d
APA, Harvard, Vancouver, ISO, and other styles
47

Liu, Chengxin, Jin Cui, Yufang Wang та Mingjie Zhang. "A new 2D Cu-MOF constructed from carboxylate ligands containing C–H⋯π interactions as a recyclable responsive luminescent sensor for VOCs". Dalton Transactions 50, № 12 (2021): 4124–28. http://dx.doi.org/10.1039/d0dt04363j.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Schmidt, Martin U., Guido Wagner, and Michael Bolte. "Redetermination of 3-hydroxy-2-naphthoic acid." Acta Crystallographica Section E Structure Reports Online 58, no. 8 (2002): o918—o919. http://dx.doi.org/10.1107/s1600536802012667.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Al-Farhan, Khalid A. "Triphenylphosphine oxide–1-naphthoic acid (1/1)." Acta Crystallographica Section C Crystal Structure Communications 60, no. 7 (2004): o531—o532. http://dx.doi.org/10.1107/s010827010401279x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Li, Hui, Xia Li та Xianjun Lang. "Extending the π-conjugated molecules on TiO2 for the selective photocatalytic aerobic oxidation of sulfides triggered by visible light". Sustainable Energy & Fuels 5, № 7 (2021): 2127–35. http://dx.doi.org/10.1039/d1se00053e.

Full text
Abstract:
The assembly of TiO<sub>2</sub> surface with 1-hydroxy-2-naphthoic acid can give rise to an apparent red-shift of its absorption band, and subsequently engender the selective aerobic oxidation of sulfides triggered by visible light.
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!