Relevant bibliographies by topics / Phenoxy acetic acid

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Phenoxy acetic acid'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Phenoxy acetic acid"

1

Fu, Jun-Dan, and Yi-Hang Wen. "2-[4-(Carboxymethyl)phenoxy]acetic acid." Acta Crystallographica Section E Structure Reports Online 67, no. 1 (December 18, 2010): o167. http://dx.doi.org/10.1107/s1600536810051810.

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GUO, TAO, XIAOLI WANG, HAIFENG WANG, YUFEN HU, SHIYONG ZHANG, and RUSONG ZHAO. "Determination of Phenoxy Acid Herbicides in Cereals Using High-Performance Liquid Chromatography–Tandem Mass Spectrometry." Journal of Food Protection 82, no. 7 (June 24, 2019): 1160–65. http://dx.doi.org/10.4315/0362-028x.jfp-18-558.

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ABSTRACTAn effective method for determination of multiple residues of phenoxy acid herbicides in cereals was developed. A QuEChERS (quick, easy, cheap, effective, rugged, and safe) technique coupled with high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS) was optimized for the analysis of phenoxy acid herbicides in rice, corn, and wheat. The limits of detection in the experiment were 0.0500 μg/kg for 4-(2,4-dichlorophenoxy)acetic acid, (4-chloro-2-methylphenoxy)acetic acid, (2,4,5-trichlorophenoxy)acetic acid, and 2-(2,4-dichlorophenoxy)propionic acid and 0.300 μg/kg for 4-(2,4-dichlorophenoxy)butyric acid and 3,6-dichloro-2-methoxybenzoic acid. The relative standard deviation of intraday and interday precision for the six phenoxy acid herbicides was less than 6.61%, and accuracy was 96.3 to 107%. Extraction recovery for phenoxy acid herbicides was 73.8 to 115%, with relative standard deviations of less than 12.1% at three spiking levels (1.00, 4.00, and 20.0 μg/kg). These results indicate that QuEChERS sample preparation with HPLC-MS/MS analysis is a rapid, reliable, highly sensitive, and specific tool for the determination of phenoxy acid herbicide residues in cereals.HIGHLIGHTS
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3

Adohi-Krou, A., V. Coulibaly, D. Sissouma, A. J. Tenon, and F. Porcher. "Crystal structure of 2,4-dimethyl-phenoxy-2-acetic acid, C10H12O3." Zeitschrift für Kristallographie - New Crystal Structures 220, no. 1-4 (April 2005): 167–68. http://dx.doi.org/10.1524/ncrs.2005.220.14.167.

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Liu, Bao-Yu, Zheng Liu, and Guo-Rui Wang. "2-(2-{[2-(2-Pyridylcarbonyl)hydrazono]methyl}phenoxy)acetic acid." Acta Crystallographica Section E Structure Reports Online 66, no. 1 (December 4, 2009): o26. http://dx.doi.org/10.1107/s160053680905082x.

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Xia, Jin Hong, Bao Yu Liu, and Zheng Liu. "2-(2-{[2-(4-Pyridylcarbonyl)hydrazinylidene]methyl}phenoxy)acetic acid." Acta Crystallographica Section E Structure Reports Online 66, no. 6 (May 15, 2010): o1341. http://dx.doi.org/10.1107/s1600536810017083.

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Kuziv, S., O. Shablykina, and V. Khilya. "METHYL ESTER OF {2-[2-CYANO-2-(4-NITROPHENYL)VINYL]PHENOXY}ACETIC ACID IN REDUCTION PROCESSES." Bulletin of Taras Shevchenko National University of Kyiv. Chemistry, no. 2(54) (2017): 71–73. http://dx.doi.org/10.17721/1728-2209.2017.2(54).14.

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3-(Het)aryl-3-(2-alkoxyphenyl)acrylonitriles are very practical polyfunctional molecules for organic synthesis; in particular difficult objects with near placed active groups can be easy obtained by the reduction of 3-(het)aryl-3-(2-alkoxyphenyl)acrylonitriles fragments. But now only reduction of activated C=C bond in such molecules mostly investigated. Previously it was shown by us that the action of sodium borohydride on esters of {2-[2-cyano-2-(4-nitrophenyl)vinyl]phenoxy}acetic acid caused not only saturation of C=C bond but also reduction of ester group to alcohol. So the results of reduction of 3-(het)aryl-3-(2-alkoxyphenyl)acrylonitriles can be more interest when other electrophilic fragment presents in molecule. And the aim of current work is the investigation of methyl ester of {2-[2-cyano-2-(4-nitrophenyl)vinyl]phenoxy}acetic acid behaviour in different reductive medium. Because of the very high electrophylity of observed molecule it's unfeasible to obtain good result in reactions with strong nucleophyles or with chemical reduction agents; that's why the hydrogenation in mild condition was used on the first step. It was found that the nitro group and the activated C=C bond were reducted simultaneously by H2 at 1.2 atm presure and room temperature with Pd/C catalizing; so methyl ester of {2-[2-(4-aminophenyl)-2-cyanoethyl]phenoxy}acetic acid was formed. Further hydrogenation took place on higher H2 presure (80 atm); and as a result of the saturation of C≡N bond methyl ester of {2-[3-amino-2-(4-aminophenyl)propyl]phenoxy}acetic acid creation occurred. The last compound can be transformed into 2-{2-[3-amino-2-(4-aminophenyl)propyl]phenoxy}ethanol by the LiAlH4 action. Such interesting structure also can be synthetized through the reduction of 3-[2-(2-hydroxyethoxy)phenyl]-2-(4-nitrophenyl)propionitrile that was obtained earlier: in the first step hydrogenation (1.2 atm H2) produced 3-[2-(2-hydroxyethoxy)phenyl]-2-(4-aminophenyl)propionitrile which nitrile group was reducted by LiAlH4 in the second step.
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Belmouden, Moustapha, Ali Assabbane, and Yhia Ait Ichou. "Adsorption characteristics of a phenoxy acetic acid herbicide on activated carbon." Journal of Environmental Monitoring 2, no. 3 (2000): 257–60. http://dx.doi.org/10.1039/a909357e.

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Fun, Hoong-Kun, Tze Shyang Chia, Ahmed M. Alafeefy, and Hatem A. Abdel-Aziz. "2-{2-[(E)-(2-Benzoylhydrazin-1-ylidene)methyl]phenoxy}acetic acid." Acta Crystallographica Section E Structure Reports Online 68, no. 7 (June 30, 2012): o2260—o2261. http://dx.doi.org/10.1107/s1600536812028735.

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Shokol, Т., N. Gorbulenko, and V. Khilya. "SYNTHESIS OF 7-HYDROXY-2,8-DIMETHYL-4-OXO-3-PHENOXY-4H-6-CHROMENECARBALDEHYDE." Bulletin of Taras Shevchenko National University of Kyiv. Chemistry, no. 1(55) (2018): 54–57. http://dx.doi.org/10.17721/1728-2209.2018.1(55).13.

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Ortho-hydroxyformylchromones are convenient syntones for the construction of linear and angular hetarenochromones. Usually, 7-hydroxy-6-formylchromones were synthesized by oxidation of natural linear furochromones: visnagin and kellin and their synthetic analogues. The Duff reaction, which is the formylation of phenols in the ortho-position by heating with hexamethylenetetramine followed by acidic hydrolysis of intermediate imine, was also used to convert 7-hydroxychromones into 7-hydroxy-6-formylchromones, but in this case there were some difficulties because of the passivity of position 6 in 7-hydroxychromones compared to position 8 to the electrophilic attack. Thus, for the preparation of 7-hydroxy-6-formylchromones, it is necessary to use 8-substituted derivatives and to provide formylation for a long time.A method for the synthesis of 7-hydroxy-6-formylchromones based on 8-substituted 7-hydroxy-6-dialkylaminomethylchromones and hexamethylenetetramine was developed using the Duff reaction conditions. This method was demonstrated on the synthesis of 7-hydroxy-2,8-dimethyl-4-oxo-3-phenoxy-4H-6-chromenecarbaldehyde from 6-dimethylaminomethyl-7-hydroxy-2,8-dimethyl-3-phenoxy-4H-4-chromenone and hexamethylenetetramine in glacial acetic acid at reflux. It should be noted that when carrying out this reaction under heating on a water bath with subsequent hydrochloric acid hydrolysis only Mannich basehydrochloride was isolated from the reaction mixture. The starting 6-dimethylaminomethyl-7-hydroxy-2,8-dimethyl-3-phenoxy-4H-4-chromenone was synthesized from 1-(2,4-dihydroxy-3-methylphenyl)-2-phenoxyethanone in three steps. Acylation of the latter with acetic anhydride in the presence of triethylamine followed by condensation afforded 2,8-dimethyl-4-оxо-3-phenoxy-4Н-7-chromenylаcetate. Subsequent removal of acetyl protection resulted in 7-hydroxy-2,8-dimethyl-3-phenoxy-4H-4-chromenone, which on introduction into the Mannich reaction with bisdimethylaminomethane in dioxane gave rise to the desired 6-dimethylaminomethyl derivative.
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Akhter, S., T. Mostarin, K. Khatun, F. Akhter, and A. Parvin. "Effects of Plant Growth Regulator on Yield and Economic Benefit of Sweet Pepper (Capsicum annum L.)." Agriculturists 16, no. 02 (December 22, 2018): 58–64. http://dx.doi.org/10.3329/agric.v16i02.40343.

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The experiment was conducted in the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. Plant growth regulators were applied which had significant effect on yield of sweet pepper (Capsicum annum L.). The experiment consisted of two factors. Factor A: Plant growth regulators (four levels) as G0: Control, G1: Gibberellic Acid (GA3) @ 30 ppm, G2: 4-Chloro Phenoxy Acetic Acid (4-CPA) @ 45 ppm and G3: 4-Chloro Phenoxy Acetic Acid (4-CPA) @ 45 ppm + Gibberellic Acid (GA3) @ 30 ppm and Factor B: Number of spray (three levels) as N0: Control (no spray), N1: two spray, N2: three spray. In case of plant growth regulators, the highest yield (27.77 t/ha) was found from G3 treatment, whereas the lowest (18.87 t/ha) was from G0 treatment. For number of spray the maximum yield (26.0 t/ha) was recorded from N2 treatment, while the minimum yield (19.87 t/ha) was from N0 treatment. The results indicated that the highest yield (31.8 t/ha) was observed from G3N2 treatment combination, while the lowest yield (17.5 t/ha) was from G0N0 treatment combination. Due to combined effect, the highest yield (31.8 t/ha) with net income (Tk/ha 1416558) and BCR (2.46) was observed from G3N2 treatment combination, while the lowest yield (17.5 t/ha) with net income (Tk/ha 433045) and BCR (1.49) from G0N0 treatment combination. Thus, three times spray with (4- Chloro Phenoxy Acetic Acid + Gibberellic Acid) may be recommended for achieving the higher growth, yield and economic benefit of sweet pepper. The Agriculturists 2018; 16(2) 58-64
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Dissertations / Theses on the topic "Phenoxy acetic acid"

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Espinosa, de los Monteros Reyna Alejandra Elvira. "Oxydation voie humide du phénol et de l'acide acétique sur catalyseurs métalliques (Ru, Pt) supportés sur oxydes TiO2-CeO2." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2264/document.

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Parmi les différents procédés chimiques, l'Oxydation en Voie Humide Catalysée (OVHC) apparaît comme une technique de choix pour le traitement des eaux usées à forte teneur en composés toxiques et peu biodégradables. Ce procédé, sous pression, est limité par la faible solubilité de l'oxygène. L'étape cruciale de la réaction est alors le transfert de l'oxygène jusqu'à la particule métallique via le support. Les phénomènes régissant ce transfert sont la composition des supports oxydes et l'interaction métal/support. L'objectif de ce travail est d'étudier l'influence de la teneur en CeO2, connue pour ses propriétés de transfert et de stockage d'oxygène, sur les propriétés de catalyseurs Ru/TiO2-x%CeO2 et Pt/TiO2-x%CeO2 en oxydation voie humide catalysée du phénol et de l'acide acétique.L'addition de cérine améliore les propriétés de stockage de l'oxygène des matériaux mais favorise (i) pour l'OVHC du phénol, la formation de polymères insolubles en solution et le dépôt d'espèces carbonées sur la surface catalytique, (ii) pour l'OVHC de l'acide acétique une carbonatation des supports. Il en résulte, dans les deux cas, une perte d'activité par blocage des sites catalytiques. Le platine s'avère plus actif que le ruthénium pour l'OVHC du phénol alors que l'inverse est observé dans le cas de l'acide acétique
Among the different chemical processes, catalytic wet air oxidation (CWAO) appears to be a promising process for the treatment of wastewater containing high levels of toxic and poorly biodegradable compounds. This over pressure process is limited by the low oxygen solubility. The limiting step of reaction is the oxygen transfer to the metal particle through the support. Phenomena governing this transfer are the oxide support composition and the metal/support interaction. The objective of this work is to study the influence of the CeO2 content, known for its oxygen transfer and storage capacity, over the catalytic properties of Ru/TiO2-x%CeO2 and Pt/TiO2-x%CeO2 for catalytic wet air oxidation of phenol and acetic acid. The addition of ceria improves the oxygen storage capacity of materials but it enhances i) for CWAO of phenol, the formation of insoluble polymers in solution and the deposition of carbonaceous species on the catalytic surface, ii) for CWAO of acetic acid, the formation of carbonates on the support. In both cases an activity lost is due to the blocking of catalytic sites. Platinum is more active than ruthenium for CWAO of phenol while the opposite is observed in the case of acetic acid
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(7360475), Sabyasachy Mistry. "MASS SPECTROMETRIC DETECTION OF INDOPHENOLS FROM THE GIBBS REACTION FOR PHENOLS ANALYSIS." Thesis, 2020.

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ABSTRACT

Phenols are ubiquitous in our surroundings including biological molecules such as L-Dopa metabolites, food components, such as whiskey and liquid smoke, etc. This dissertation describes a new method for detecting phenols, by reaction with Gibbs reagent to form indophenols, followed by mass spectrometric detection. Unlike the standard Gibbs reaction which uses a colorimetric approach, the use of mass spectrometry allows for simultaneous detection of differently substituted phenols. The procedure is demonstrated to work for a large variety of phenols without para‐substitution. With para‐substituted phenols, Gibbs products are still often observed, but the specific product depends on the substituent. For para groups with high electronegativity, such as methoxy or halogens, the reaction proceeds by displacement of the substituent. For groups with lower electronegativity, such as amino or alkyl groups, Gibbs products are observed that retain the substituent, indicating that the reaction occurs at the ortho or meta position. In mixtures of phenols, the relative intensities of the Gibbs products are proportional to the relative concentrations, and concentrations as low as 1 μmol/L can be detected. The method is applied to the qualitative analysis of commercial liquid smoke, and it is found that hickory and mesquite flavors have significantly different phenolic composition.

In the course of this study, we used this technique to quantify major phenol derivatives in commercial products such as liquid smoke (catechol, guaiacol and syringol) and whiskey (o-cresol, guaiacol and syringol) as the phenol derivatives are a significant part of the aroma of foodstuffs and alcoholic beverages. For instance, phenolic compounds are partly responsible for the taste, aroma and the smokiness in Liquid Smokes and Scotch whiskies.

In the analysis of Liquid Smokes, we have carried out an analysis of phenols in commercial liquid smoke by using the reaction with Gibbs reagent followed by analysis using electrospray ionization mass spectrometry (ESI-MS). This analysis technique allows us to avoid any separation and/or solvent extraction steps before MS analysis. With this analysis, we are able to determine and compare the phenolic compositions of hickory, mesquite, pecan and apple wood flavors of liquid smoke.

In the analysis of phenols in whiskey, we describe the detection of the Gibbs products from the phenols in four different commercial Scotch whiskies by using simple ESI-MS. In addition, by addition of an internal standard, 5,6,7,8-tetrahydro-1-napthol (THN), concentrations of the major phenols in the whiskies are readily obtained. With this analysis we are able to determine and compare the composition of phenols in them and their contribution in the taste, smokey, and aroma to the whiskies.

Another important class of phenols are found in biological samples, such as L-Dopa and its metabolites, which are neurotransmitters and play important roles in living systems. In this work, we describe the detection of Gibbs products formed from these neurotransmitters after reaction with Gibbs reagent and analysis by using simple ESI‐MS. This technique would be an alternative method for the detection and simultaneous quantification of these neurotransmitters.

Finally, in the course of this work, we found that the positive Gibbs tests are obtained for a wide range of para-substituted phenols, and that, in most cases, substitution occurs by displacement of the para-substituent. In addition, there is generally an additional unique second-phenol-addition product, which conveniently can be used from an analytical perspective to distinguish para-substituted phenols from the unsubstituted versions. In addition to using the methodology for phenol analysis, we are examining the mechanism of indophenol formation, particularly with the para-substituted phenols.

The importance of peptides to the scientific world is enormous and, therefore, their structures, properties, and reactivity are exceptionally well-characterized by mass spectrometry and electrospray ionization. In the dipeptide work, we have used mass spectrometry to examine the dissociation of dipeptides of phenylalanine (Phe), containing sulfonated tag as a charge carrier (Phe*), proline (Pro) to investigate their gas phase dissociation. The presence of sulfonated tag (SO3-) on the Phe amino acid serves as the charge carrier such that the dipeptide backbone has a canonical structure and is not protonated. Phe-Pro dipeptide and their derivatives were synthesized and analyzed by LCQ-Deca mass spectroscopy to get the fragmentation mechanism. To confirm that fragmentation path, we also synthesized dikitopeparazines and oxazolines from all combinations of the dipeptides. All these analyses were confirmed by isotopic labeling experiments and determination and optimization of structures were carried out using theoretical calculation. We have found that the fragmentation of Phe*Pro and ProPhe* dipeptides form sequence specific b2 ions. In addition, not only is the ‘mobile proton’ involved in the dissociation process, but also is the ‘backbone hydrogen’ is involved in forming b2 ions.

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Books on the topic "Phenoxy acetic acid"

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Shawn, Jerome Willik. Dioxins, TCDD (2,3,7,8- tetrachloro-dibenzo-p-dioxin) and Agent Orange (2,4,5- trichloro-phenoxy-acetic acid): Index of new information with research results. Washington, D.C: ABBE Publishers Association of Washington, D.C., 1995.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Acetic acid: Environmental and technical information for problem spills. Ottawa, Ont., Canada: Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Nitric acid: Environmental and technical information for problem spills. Ottawa, Ont: Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Sodium chlorate: Environmental and technical information for problem spills. Ottawa, Ont., Canada: Environment Canada, Environmental Protection Service, 1985.

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Methanol: Environmental and technical information for problem spills (Environmental and technical information for problem spills manuals). Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Service. Technical Services Branch., ed. Urea: Environmental and technical information for problem spills. [Ottawa, Ont.]: Environmental Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Sulphur dioxide: Environmental and technical information for problem spills. Ottawa, Ont: Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Sodium sulphate: Environmental and technical information for problem spills. Ottawa, Ont., Canada: Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Ethylene glycol: Environmental and technical information for problem spills. Ottawa, Ont: Environment Canada, Environmental Protection Service, 1985.

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Canada. Environmental Protection Programs Directorate. Technical Services Branch., ed. Tetraethyl lead: Environmental and technical information for problem spills. Ottawa, Ont., Canada: Environment Canada, Environmental Protection Service, 1985.

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Book chapters on the topic "Phenoxy acetic acid"

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Sposato, Corradino, Alessandro Blasi, Giuseppe Devincenzis, Pietro Garzone, and Massimo Morgana. "Comparison Among Different Extractants, AS (2-Ethylhexyl)-Mono (2-Ethylhexyl) Ester Phosphonic Acid (P507), Secondary-octyl Phenoxy Acetic Acid (CA-12) and Bis (2, 4, 4-Trimethylpentyl) Phosphinic Acid (CYANEX272), in the Separation of Heavy Rare Earths v." In Rare Metal Technology 2014, 201–3. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888551.ch36.

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Winkelmann, Jochen. "Diffusion coefficient of phenol in acetic acid butyl ester." In Diffusion in Gases, Liquids and Electrolytes, 837. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-54089-3_515.

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Winkelmann, Jochen. "Diffusion coefficient of phenol into hexane and acetic acid ethyl ester solution." In Diffusion in Gases, Liquids and Electrolytes, 1408. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_1178.

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Winkelmann, Jochen. "Diffusion coefficient of 2-methyl-phenol into hexane and acetic acid ethyl ester solution." In Diffusion in Gases, Liquids and Electrolytes, 1445. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_1215.

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Lingaraj, Vijay Kumar, A. K. Chakravarthy, and Siddanagowda Ujjanagowda Patil. "Impact of Gall Midge, Orseolia Oryzae (Wood-Mason) Infestation on Total Phenols, Proline and Indole Acetic Acid in Paddy (Oryza Sativa Linn.) Genotypes." In New Horizons in Insect Science: Towards Sustainable Pest Management, 261–67. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2089-3_23.

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Williams, A. C., and N. Camp. "Condensation of (Aminocarbonyl)acetic Acid Esters with Phenols." In Six-Membered Hetarenes with One Chalcogen, 1. Georg Thieme Verlag KG, 2003. http://dx.doi.org/10.1055/sos-sd-014-00457.

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Neves, I., F. Jayat, D. B. Lukyanov, P. Magnoux, G. Pérot, F. R. Ribeiro, M. Gubefmann, and M. Guisnet*. "Kinetic Study of the Acylation of Phenol with Acetic Acid Over A HZSM5 Zeolite." In Catalysis of Organic Reactions, 515–19. Routledge, 2017. http://dx.doi.org/10.1201/9781315138855-56.

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Taber, Douglass F. "Organic Functional Group Protection." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0014.

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Sentaro Okamoto of Kanagawa University developed (Tetrahedron Lett. 2014, 55, 7039) an organocatalyst that mediated the selective acylation of 1 to give the pri­mary acetate 2. Philip A. Albiniak of Ball State University devised (Tetrahedron Lett. 2014, 55, 7133) a reagent 4 for the simple preparation of a t-butyl ether 5 from an alcohol 3. Attempted deprotection of 6 tended to divert to the dioxolane. Toshio Nishikawa of Nagoya University developed (Synlett 2014, 25, 2498) an oxidative protocol that gave clean conversion to the desired 7. Alan S. Goodman of Rutgers University found (Angew. Chem. Int. Ed. 2014, 53, 10160) an Ir catalyst that generated the phenol 9 from the aryl alkyl ether 8. In the course of a synthesis of Sch 725674, Kavirayani R. Prasad of the Indian Institute of Science, Bangalore deprotected (Org. Lett. 2014, 16, 4001) the dithi­ane 10 to yield the sensitive aldol product 11. Karl Anker Jørgensen of Aarhus University observed (Chem. Commun. 2014, 50, 15689) that the nitro isoxazole 12, having served to activate sequential Michael addition, was readily cleaved to the acid 13. Jiang Cheng of Changzhou University used (Chem. Commun. 2014, 50, 8412) CuCN to convert 14 to 15. Pradeep Kumar of CSIR-National Chemistry Laboratory effected (Tetrahedron Lett. 2014, 55, 7172) oxidative deallylation of 16, leading to 17. Hiroyuki Morimoto and Takashi Ohshima of Kyushu University found (Chem. Commun. 2014, 50, 12623) that NH₄I promoted the hydrazinolysis of the amide 18, giving 19 without racemization. Franco Ghelfi of the Università degli Studi di Modena e Reggio Emilia prepared (Eur. J. Org. Chem. 2014, 6734) 21 by desulfonylating 20 to 21 with H₂SO₄ in acetic acid. Hans Adolfsson of Stockholm University reduced (Org. Lett. 2014, 16, 680) the amide 22 to the enamine 23. The N-vinyl amine could be hydrolyzed, but it is also a versatile intermediate for other transformations. Automated peptide synthesis can be hindered by difficult sequences. Judit Tulla-Puche and Fernando Albericio of IRB Barcelona showed (Chem. Eur. J. 2014, 20, 15031) that the substituted benzyl group of 24 facilitated such syntheses, and that it could be readily removed to give 25 by exposure to NH₄I and trifluoroacetic acid.
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Jayat, F., M. Guisnet, M. Goldwasser, and G. Giannetto. "Acylation of phenol with acetic acid. Effect of density and strength of acid sites on the properties of MFI metallosilicates." In Studies in Surface Science and Catalysis, 1149–56. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80751-3.

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"DUST-BORNE TRACE GASES AND ODORANTS The analysis of dust-borne trace gases requires their i-solation from the dust particles. Procedures for the isolation and characterization of trace gases and odorants in the dust from pig houses are given by SCHAEFER et al. (29), HAMMOND et al.(30) and TRAVIS and ELLIOTT (31). Alcoholic solvents were found to be effective for the extraction of volatile fatty ac­ ids and phenols from the dust of hen (32) and pig houses (33), (34). Today, gas chromatography is usually used for the sepa­ ration and identification of the trace gases. Table IV gives a literature review of compounds identified in the dust of pig houses. There are only very few reports on investigations on the dust from hen houses (32). Most of the odours coming from livestock production units are associated with the biological degradation of the animal wastes (35), the feed and the body odour of the animals (1). Volatile fatty acids and phenolic compounds were found to con­ tribute mostly to the strong, typical odour of animal houses by the help of sensory evaluations parallel to the chemical analysis (29),(30). Table V gives quantitative values of volatile fatty acids and phenolic/indolic compounds found in the aerosol phase and in settled dust of piggeries, respectively. The results from the aerosol phase coincide, particularly as far as acetic acid is concerned. For the investigations of the settled dust the coefficients of variation (CV) and the relative values (%) characterizing the percentage of the single compounds as part of the total amount are quoted. The values are corrected with the dry matter content of the dust. Main components are acetic acid and p-cresol, respectively. Table VI compares results from air, dust and slurry in­ vestigations on VFA and phenolic/indolic compounds in piggeries. Relative values are used. When comparing the results derived from investigations on dust, air or slurry it is necessary to use relative values because of the different dimensions, for experience shows that in spite of large quantitative differ­ ences between two samples within the group of carboxylic acids and within the group of phenolic/indolic compounds the propor­ tions of the components remain rather stable (36). In the group of VFA acetic acid is the main component in air, dust, and slurry followed by propionic and butyric acid. The other three acids amount to less than 25%. In the group of phenols/ indoles p-cresol is the main component in the four cited in­ vestigations. However, it seems that straw bedding can reduce the p-cresol content; in this case phenol is the main compo­ nent , i nstead (37 ). 4. EMISSION OF DUST-BORNE VFA AND PHENOLS/INDOLES FROM PIGGERIES The investigations of dust from piggeries show that both VFA and phenols/indoles are present in a considerable amount. However, compared to the air-borne emissions calculated on the base of the results of LOGTENBERG and STORK (38) less than the tenth part (1/10) of phenols/indoles and about the hundredth part (1/100) of VFA are emitted by the dust, only. Table VII compares the dust-borne and air-borne emissions of VFA and." In Odour Prevention and Control of Organic Sludge and Livestock Farming, 337. CRC Press, 1986. http://dx.doi.org/10.1201/9781482286311-131.

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Conference papers on the topic "Phenoxy acetic acid"

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Jain, Abhishek, and R. K. Agrawal. "Designing hypothesis of some 2,4 -disubstituted-phenoxy acetic acid derivatives as a Crth2 receptor antagonist: A QSAR approach." In 2009 International Conference on Biomedical and Pharmaceutical Engineering (ICBPE). IEEE, 2009. http://dx.doi.org/10.1109/icbpe.2009.5384069.

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Khurana, Tarun K., Moran Bercovici, and Juan G. Santiago. "Indirect Fluorescence Detection of Non Fluorescent Analytes Using Isotachophoretic Mobility Markers." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62027.

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Abstract:
We have developed a method to detect non-fluorescent analytes on standard microfluidic chip platforms equipped with fluorescence detection. We leverage isotachophoresis (ITP) to electrophoretically segregate both analytes and fluorescent species termed mobility markers into distinct zones. The fluorescent marker zones bound analyte zones, so that gaps in the fluorescent signal indicate the presence and concentration of analytes. We here demonstrate separation and indirect detection of amino acids, serine and phenylalanine and organic acids, acetic acid and phenylpropionic acid (∼10 μM) using this technique. We also present an indirect detection of the environmental toxin phenol [1][2] (∼10 μM) using two mobility markers. We show preliminary numerical simulation results that provide useful guidelines in design and optimization of our indirect detection assay.
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