Academic literature on the topic 'Ethyl acetoacetate'

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Journal articles on the topic "Ethyl acetoacetate"

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Mijin, Dusan, Gordana Uscumlic, and Natasa Valentic. "Synthesis and investigation of solvent effects on the ultraviolet absorption spectra of 5-substituted-4-methyl-3-cyano-6-hydroxy-2-pyridones." Journal of the Serbian Chemical Society 66, no. 8 (2001): 507–16. http://dx.doi.org/10.2298/jsc0108507m.

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A number of 5-substituted-4-methyl-3-cyano-6-hydroxy-2-pyridones from cyanoacetamide and the corresponding alkyl ethyl acetoacetates were synthesized according to modified literature procedures. The alkyl ethyl acetoacetates were obtained by the reaction of C-alkylation of ethyl acetoacetate. An investigation of the reaction conditions for the synthesis of 4-methyl-3-cyano-6-hydroxy-2-pyridone from cyanoacetamide and ethyl acetoacetate in eight different solvents was also performed. The ultraviolet absorption spectra of synthesized pyridones were measured in nine different solvents in the rang
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Ji, Hong, Tao Dai, Mu Yuan, Liu Zhu та Biyun Huang. "Synthesis of α-Alkyltetronic Acids". Advanced Materials Research 554-556 (липень 2012): 1861–64. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.1861.

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Tetronic acid, namely 4-hydroxy-2(5H)-furanone, was prepared from ethyl acetoacetate by bromination at γ position followed by hydrolysis and cyclization in aqueous NaOH solution. Using ethyl α-alkylacetoacetate afforded by alkylation of ethyl acetoacetate as starting material, four α-alkyltetronic acids were synthesized. Optimization of the reaction conditions led to total yield of more than 64%.
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Tamaddon, Fatemeh, and Ali Khorram. "Advanced Catalyst-Free Pseudo-Six-Component Synthesis of Tetrahydrodipyrazolopyridines in Water by Using Ammonium Carbonate as an Ecofriendly Source of Nitrogen." Synlett 31, no. 07 (2020): 691–94. http://dx.doi.org/10.1055/s-0039-1691600.

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This work describes an improved environmentally friendly method for the synthesis of tetrahydrodipyrazolopyridines (THDPPs) in water through a catalyst-free pseudo-six-component reaction of alkyl acetoacetates, hydrazine hydrate, and ammonium carbonate with an aldehyde in a mole ratio of 2:2:1:1 at room temperature. The ammonium carbonate serves as a green source of nitrogen for the central 1,4-dihydropyridine ring in the THDPPs. Methyl acetoacetate reacts faster than either ethyl or propyl acetoacetate in this method. The product precipitates during the reaction and is simply collected by fil
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Kada, Rudolf, Dušan Ilavský, Jarmila Štetinová, Lubomír Zalibera, and Jiří Paďour. "Synthesis, Reactions and Spectral Properties of Ethyl Esters of 2-Cyano-3-(5-X-2-furyl)acrylic Acid." Collection of Czechoslovak Chemical Communications 59, no. 2 (1994): 444–52. http://dx.doi.org/10.1135/cccc19940444.

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The reaction of 5-X-2-furaldehydes (X = C6H5, COOCH3, COOC2H5, C6H5O, C6H5S, CH3S, 4-Cl-C6H4S, CH3SO2, C6H5SO2, 4-Cl-C6H4SO2) with ethyl cyanoacetate in dry ethanol catalyzed by sodium ethoxide yielded the corresponding ethyl 2-cyano-3-(5-X-2-furyl)acrylates. It was found that the reactions of these esters with cyanoacetophenone or ethyl acetoacetate do not afford the corresponding 4H-pyran derivatives but that there proceeds the exchange of ethyl acetoacetate or of ethyl cyanoacetate for the cyanoacetophenone carbanion. The same course has been observed also for the reactions of these substra
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Deepa, Geeta D. Yadav, Mohd J. Aalam, Pooja Chaudhary, and Surendra Singh. "Synthesis of Dihydropyrimidinones (DHPMs) and Hexahydro Xanthene Catalyzed by 1,4-Diazabicyclo [2.2.2] Octane Triflate Under Solvent-Free Condition." Current Organic Synthesis 16, no. 5 (2019): 776–86. http://dx.doi.org/10.2174/1570179415666181113154232.

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Objective:DABCO salts were evaluated as catalysts for the Biginelli reaction between 4- methoxybenzaldehyde, urea and ethyl acetoacetate under solvent-free conditions. 1,4-Diazabicyclo [2.2.2] octane triflate was found to be a simple, inexpensive, highly efficient catalyst for Biginelli reaction for a variety aromatic aldehyde with urea and ethyl acetoacetate at 80°C afforded corresponding 3,4-dihydropyrimidinones in 50-99% yields after 30-120 minutes. 1,3-Cyclohexadione was used in place of ethyl acetoacetate in the absence of urea this methodology is giving hexahydro xanthene derivatives in
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Horne, S. M., M. Schroeder, J. Murphy, and B. M. Prüβ. "Acetoacetate and ethyl acetoacetate as novel inhibitors of bacterial biofilm." Letters in Applied Microbiology 66, no. 4 (2018): 329–39. http://dx.doi.org/10.1111/lam.12852.

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Yusuff, Adeyinka Sikiru, Yanlong Gu, Elyor Berdimurodov та Ilyos Eliboev. "Metal-bipyridine supported on 3-aminopropyl-functionalized MK10: effect of a metalating agent on the catalytic activity in the transesterification of β-keto ester". RSC Advances 14, № 39 (2024): 28308–19. http://dx.doi.org/10.1039/d4ra04834b.

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This article reports the utilization of an efficient and reusable MK10-based inorganic–organic hybrid metal catalyst for the transesterification of β-keto ethyl acetoacetate (EAA) with butanol (BTL) to produce butyl acetoacetate (BAT).
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Ribeiro, Joyce Benzaquem, Maria da Conceição Klaus V. Ramos, F. R. de Aquino Neto, Selma Gomes Ferreira Leite, and O. A. C. Antunes. "Microbiological enantioselective reduction of ethyl acetoacetate." Journal of Molecular Catalysis B: Enzymatic 24-25 (October 2003): 121–24. http://dx.doi.org/10.1016/s1381-1177(03)00111-5.

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Aghaei-Hashjin, Mehraneh, Asieh Yahyazadeh, and Esmayeel Abbaspour-Gilandeh. "Mo@GAA-Fe3O4 MNPs: a highly efficient and environmentally friendly heterogeneous magnetic nanocatalyst for the synthesis of polyhydroquinoline derivatives." RSC Advances 11, no. 18 (2021): 10497–511. http://dx.doi.org/10.1039/d1ra00396h.

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Polyhydroquinolines were obtained from a sequential four-component reaction between dimedone or 1,3-cyclohexandione, ethyl acetoacetate, or methyl acetoacetate as a β-ketoester, aldehydes, and ammonium acetate, with Mo@GAA-Fe3O<sub>4</sub> MNPs as a green nanocatalyst.
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Liu, Shu Jing, Yun Peng Li, Xiu Min Yang, and Qing Mei Jiang. "Synthesis of 7-hydroxy-4-methyl Coumarin with Microwave Radiation Catalyzed by Zirconium Sulfate Tetrahydrate." Advanced Materials Research 671-674 (March 2013): 2692–96. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.2692.

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The 1,3-benzenediol and ethyl acetoacetate as raw materials were used to synthesize 7-hydroxy-4-methyl coumarin under microwave irradiation with Zirconium sulfate tetrahydrate as the catalyst. The effect of various reaction conditionson on the yield was explored.Experiment shows that the yield reached up to 87. 5%,when the reaction conditions are as follow:n(1,3-benzenediol):n(ethyl acetoacetate)1.0, Zirconium sulfate tetrahydrate 0.4g,10mL cyclohexane, the reaction time 12 min,microwave radiation power 500W.
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Dissertations / Theses on the topic "Ethyl acetoacetate"

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Gray, Christopher Anthony. "Structural and synthetic investigations of diterpenoid natural products from southern African marine invertebrates." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1005014.

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This thesis is divided into two parts. The first part (Chapter Two) documents a bioassay guided investigation of the ethyl acetate extracts of four marine invertebrates from Mozambique (an Irciniid sponge, a Haliclona sp. sponge, an ascidian tentatively identified as Diplosoma sp., and the soft coral Cladiella kashmani). Eight known compounds [ilimaquinone (2.1), renierone (2.7), N-formyl-1,2-dihydrorenierone (2.8), 1,6-dimethyl-7-methoxy-5,8-dihydroisoquinoline-5,8-dione (2.9), mimosamycin (2.10) 7Z-allylidene-5-hydroxy-7,7a-dihydro-2H-cyclopenta[b]pyran-6-one (2.11), flaccidoxide (2.18) and
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Bayly, Jennifer Carr 1977. "Manipulating the levels of ethyl acetate and isoamyl acetate formation during the production of wine and brandy." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52926.

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Thesis (MSc)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: The production of wine is a complex process, which involves the conversion of sugar in grape must to ethanol, carbon dioxide and other byproducts. The principal organism in winemaking is yeast, of which Saccharomyces cerevisiae is the most important due to its ability to survive winemaking conditions, its GRAS (Generally Regarded As Safe) status and the favourable flavours it imparts during the winemaking process. However, due to the demands of the consumer and the emergence of sophisticated wine markets, a demand is d
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Tseng, Jui-Ching, and 曾瑞慶. "Asymmetric Bioreduction of Ethyl 4-chloro acetoacetate in Organic Solvent-Water Biphasic System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/49181093984245389409.

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碩士<br>義守大學<br>生物技術與化學工程研究所碩士班<br>94<br>This study investigated the kinetic characteristics of asymmetric bioreduction of ethyl 4-chloro acetoacetate (ECA) to produce (S)-4-chloro-3-hydroxybutyric acid ethyl ester (S-CHBE) by Saccharomyces cerevisiae in organic solvent-water biphasic system. In the asymmetric bioreduction of different substrates, some literature reported that the addition of organic solvent could promote the enantiomeric selectivity of baker’s yeast, but no relevant study reported about asymmetric bioreduction of ECA. This study firstly investigated the effects of several o
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Books on the topic "Ethyl acetoacetate"

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Altstoffe, Gesellschaft Deutscher Chemiker Beratergremium für Umweltrelevante. Ethyl acetoacetate: Acetone. Hirzel, 1997.

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Book chapters on the topic "Ethyl acetoacetate"

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Lide, David R. "Ethyl acetoacetate." In Handbook of Organic Solvents. CRC Press, 2024. http://dx.doi.org/10.1201/9781003575191-208.

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Wohlfarth, Ch. "Viscosity of ethyl acetoacetate." In Supplement to IV/18. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75486-2_193.

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Wohlfarth, Christian. "Viscosity of ethyl acetoacetate." In Viscosity of Pure Organic Liquids and Binary Liquid Mixtures. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49218-5_197.

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Wohlfarth, Ch. "Surface tension of ethyl acetoacetate." In Supplement to IV/16. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75508-1_119.

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Wohlfarth, Christian. "Refractive index of ethyl acetoacetate." In Optical Constants. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49236-9_227.

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Holze, Rudolf. "Ionic conductivities of ethyl acetoacetate." In Electrochemistry. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_229.

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Charles, R. G., N. C. Peterson, G. H. Franke, R. Steffl, and E. M. Larsen. "Aluminum Derivative of Ethyl Acetoacetate." In Inorganic Syntheses. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132401.ch8.

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Wohlfarth, Ch. "Refractive index of ethyl acetoacetate." In Refractive Indices of Pure Liquids and Binary Liquid Mixtures (Supplement to III/38). Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75291-2_183.

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Wohlfarth, Christian. "Surface tension of ethyl acetoacetate." In Surface Tension of Pure Liquids and Binary Liquid Mixtures. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-48336-7_110.

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Wohlfarth, Ch. "Viscosity of the mixture (1) ethanol; (2) ethyl acetoacetate." In Supplement to IV/18. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75486-2_768.

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Conference papers on the topic "Ethyl acetoacetate"

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Kadarohman, Asep, Aina H. Salim, Ratnaningsih E. Sardjono, Amelinda Pratiwi, and Lela L. Khumaisah. "Synthesis of ethyl acetoacetate from ethyl acetate using sodium ethoxide as a catalyst." In INTERNATIONAL SEMINAR ON MATHEMATICS, SCIENCE, AND COMPUTER SCIENCE EDUCATION (MSCEIS) 2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0155859.

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Kadarohman, Asep, Agista Safitri, Ratnaningsih E. Sardjono, Amelinda Pratiwi, and Lela L. Khumaisah. "Optimum condition of fructone synthesis from ethyl acetoacetate with sulfuric acid catalyst." In THE 6TH INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY (ICST21): Challenges and Opportunities for Innovation Research on Science Materials, and Technology in the Covid-19 Era. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0123760.

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Kumbhar, Amit, Vaibhav Kulkarni, Sachin Laddha, Madhav Pande, and Kailas Karande. "Reductive Biotransformation of Ethyl Acetoacetate: A Comparative Studies using Free and Immobilized Whole Yeast Cells." In The 11th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2007. http://dx.doi.org/10.3390/ecsoc-11-01337.

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Javadi, A., M. Taeibi-Rahni, D. Bastani, and K. Javadi. "The Effects of Hydrodynamics Characteristics on Mass Transfer During Droplet Formation Using Computational Approach." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13283.

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For the reason that flow expansion model (developed in our previous work) for evaluating mass transfer during droplet formation involves with manifest hydrodynamic aspects, in this research computational simulation of this phenomenon was done for characterization of hydrodynamics effects on the mass transfer during droplet formation. For this purpose, an Eulerian volume tracking computational code based on volume of fluid (VOF) method was developed to solve the transient Navier-Stokes equations for the axisymmetric free-boundary problem of a Newtonian liquid that is dripping vertically and bre
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