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Rozprawy doktorskie na temat „Olefin oxidation”

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Data publikacji: 6 września 2023

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1

Javadekar, Ashay Dileep. "Surface science studies of olefin oxidation on the silver surface." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 131 p, 2009. http://proquest.umi.com/pqdweb?did=1889838931&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Hamidi, A. "Interaction between hindered piperidine light stabilisers and antioxidants in the thermal and photochemical oxidation of polyolefins." Thesis, Manchester Metropolitan University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378064.

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3

Townsend, Erik Matthew. "High-oxidation-state molybdenum and tungsten monoalkoxide pyrrolide alkylidenes as catalysts for olefin metathesis." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91116.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2014.<br>Cataloged from PDF version of thesis. Vita.<br>Includes bibliographical references.<br>Chapter 1 describes work toward solid-supported W olefin metathesis catalysts. Attempts to tether derivatives of the known Z-selective catalyst W(NAr)(C₃H₆)(pyr)(OHIPT) (Ar = 2,6- diisopropylphenyl, pyr = pyrrolide; HIPT = 2,6-bis-(2,4,6-triisopropylphenyl)phenyl) to a modified silica surface by covalent linkages are unsuccessful due to destructive interactions between W precursors and silica. W(NAr)(C₃H₆)(pyr)(OHIPT) an

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4

Flook, Margaret McGuigan. "Z-selective olefin metathesis processes and Cis/syndioselective ROMP with high oxidation state molybdenum alkylidenes." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73354.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2012.<br>Vita. Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Chapter 1: Reaction of W(CCMe3)Cl 3(dme) with one equivalent of (3,5-Me 2C6H3NCH2CH 2)3N)Li3 affords yellow, crystalline W(CCMe3)(N3N) in good yield. The reactivity of this new alkylidyne complex towards terminal alkynes was investigated. Two other new tungsten alkylidynes, W(CCMe3)(pyr) 3 (pyr = 2,5-dimethylpyrrolide) and W(CCMe3)(Ph 2N)3 were prepared by the addition of three equivalents of lithium dimethylpyrrolide or lit

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5

Ackerman, Lily Joy Grubbs Robert H. Bercaw John E. "Ancillary ligand effects in niobocene olefin hydride complexes and hydrocarbon oxidation by palladium(II) complexes /." Diss., Pasadena, Calif. : California Institute of Technology, 2003. http://resolver.caltech.edu/CaltechETD:etd-05212003-130334.

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6

Gardan, Martino. "Innovative catalytic processes for oxidation reactions." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3426141.

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The study and the development of innovative metal-catalysed systems for the oxygenation of organic molecules with sustainable oxidants, and especially molecular oxygen, O2, or hydrogen peroxide, H2O2, is a very attractive perspective for the Chemical Industry. In the Thesis project, different strategies have been addressed to implement benchmark oxidative transformations, including the autooxidation of benzylic derivatives, the hydroxylation of aromatic hydrocarbons and the epoxidation of olefins. In all cases, the research approach has been based on some key issues, namely the integrated us

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7

Shrestha, Sweta. "Application of Transition Metal Coordination for Energy Efficient Processes: Catalysis and Separation." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1502975499629018.

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8

Axtell, Jonathan Clayton. "Synthesis and reactivity of high oxidation state tungsten and molybdenum olefin metathesis catalysts bearing new imido ligands." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98598.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Chapter 1 details the synthesis of tungsten imidoalkylidene compounds bearing strongly electron-withdrawing imido ligands. An alternative synthesis involving the treatment of WCl6 with 4 equivalents of N-trimethylsilyl-substituted anilines and subsequent workup with 1,2-dimethoxyethane (DME) has been employed to form complexes of the type W(NAr)2C12(dme); syntheses employing WO2C 2(dme) as the tungsten precursor were unsuccess

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9

Tsang, W. C. Peter 1975. "High oxidation state molybdenum and tungsten imido alkylidene and metallacycle chemistry : catalytic asymmetric olefin metathesis and mechanistic investigation." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/30064.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2004.<br>Vita.<br>Includes bibliographical references.<br>Enantiomerically pure molybdenum imido alkylidene complexes of the type Mo(NAr)(CHCMe₂Ph)[Ar'](THF), which contained 3,3'-diaryl (Ar' = Mes (21), Ph (22)) substituted binaphtholate ligands, were prepared and structurally characterized. Complex 21 was a trigonal bipyramidal anti alkylidene complex; both 21 and 22 were anti-THF adducts. Temperature and concentration dependent enantioselective desymmetrization of prochiral trienes by catalyst 21 afforded five- and

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10

Sen, Suman [Verfasser], and Michael R. [Akademischer Betreuer] Buchmeiser. "High oxidation state N-heterocyclic carbene molybdenum alkylidene complexes : functional-group tolerant olefin metathesis catalysts / Suman Sen ; Betreuer: Michael R. Buchmeiser." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1118371305/34.

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11

Ansaloni, Simone. "Oxidative properties of the Iron - Thymine-1-acetic acid - Hydrogen peroxide catalytic system." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/4937/.

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The oxidation of alcohols and olefins is a pivotal reaction in organic synthesis. However, traditional oxidants are toxic and they often release a considerable amounts of by-products. Here, two IronIII-based systems are shown as oxidative catalyst, working in mild conditions with hydrogen peroxide as primary oxidant. An efficient catalytic system for the selective oxidation of several alcohols to their corresponding aldehydes and ketones was developed and characterized, [Fe(phen)2Cl2]NO3 (phen=1,10-Phenantroline). It was demonstrated that the adoption of a buffered aqueous solution is of cruc

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12

Meng, Xiangtao. "Chemical Modification of Cellulose Esters for Oral Drug Delivery." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71383.

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Polymer functional groups have critical impacts upon physical, chemical and mechanical properties, and thus affect the specific applications of the polymer. Functionalization of cellulose esters and ethers has been under extensive investigation for applications including drug delivery, cosmetics, food ingredients, and automobile coating. In oral delivery of poorly water-soluble drugs, amorphous solid dispersion (ASD) formulations have been used, prepared by forming miscible blends of polymers and drugs to inhibit crystallization and enhance bioavailability of the drug. The Edgar and Tay

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13

Borrell, Recasens Margarida. "Small-molecule mimics of rieske oxygenases. Application to selective aliphatic C-H hydroxylation and olefin syn-dihydroxylation." Doctoral thesis, Universitat de Girona, 2021. http://hdl.handle.net/10803/673107.

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Oxidations are an important kind of reactions which are traditionally performed using stoichiometric oxidants that generate a large amount of waste. Syn-dihydroxylation of alkenes is a paradigmatic example because it is a cornerstone reaction in organic synthesis that still relies in the use of heavy metal oxides, specially Os and Ru based oxides in catalytic amounts, but also KMnO4, in stoichiometric amounts. Acetonitrile and halogenated solvents are widely used solvents in these reactions because of their robust nature against oxidants. However, metal catalyzed oxidations in green solv

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14

Klauber, David J. "Development of novel olefin oxidations." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491271.

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The oxidation of olefins is of central importance in organic synthesis. This thesis is divided into the development of novel approaches to two classes of this transformation: (i) dihydroxylation and (ii) aminohydroxylation. (i) Dihydroxylation 1. Introduction- 1,2-Benzoquinones The chemistry of 1,2-benzoquinones is reviewed, including synthesis and reactivity; particular attention is paid to their cycloaddition chemistry and their reaction as hetero-dienes with alkenes. 2. Results and discussion - Utilising 1,2-benzoquinones as reagents for dihydroxylation The [4+2] reaction of 3,4,5,6-tetrach

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15

S, Suresh. "Studies On Oxidation Of Benzylidene Derivatives." Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/151.

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Perfumery compounds isoeugenol and isosafrole can be oxidized to their aldehydes, vanillin and heliotropin respectively. The aldehydes obtained are very useful and commercially valuable products. Apart from their importance as perfumery compounds, they form important intermediates in the Pharmaceuticals and pesticide industries. Liquid phase oxidation of isosafrole using different oxidizing agents were tried. Sodium dichromate as oxidizing agent in aqueous acetic acid was found to be most suitable because of its higher yields and mild reaction conditions. This reaction was taken up for detai

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16

Junior, Luiz Fernando da Silva. "Reações de contração de anel promovidas por sais de tálio (III)." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-25052007-151439/.

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Esta tese apresenta um estudo sobre a contração de anel de olefinas e cetonas cíclicas promovida por sais de tálio(III). A reação de uma série de cicloexanonas e cis e trans-2-decalonas com TTN em CH2Cl2 levou aos correspondentes produtos de contração em rendimentos muito bons, desde que não houvesse um grupo metila em α-carbonila. A reação de 3- e 4-alquilcicloexanonas, bem como de trans-2-decalonas, ocorreu com alto grau de seletividade. As diastereosseletividades observadas estão de acordo com o mecanismo proposto por McKillop. O sistema indânico, resultante da contração de um dos an

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17

鄧文偉 and Man-wai Simon Tang. "Novel cyclic ketones for catalytic epoxidation of olefins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214654.

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18

葉耀宗 and Yiu-chung Yip. "Asymmetric epoxidation of unfunctionalized olefins catalyzed by chiralketones." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31236406.

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19

Zhang, Chi. "Studies on epoxidation of olefins by IN SITU generated N-sulfonyloxaziridine and ruthenium catalyzed oxidative cleavage of olefins." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22718667.

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20

Abada, Zahra. "Synthèse de porphyrines chirales : application en oxydation asymétrique et application antiparasitaire et anticancéreuse." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA114806.

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Les molécules chirales représentent environ 60% des médicaments présents sur le marché pharmaceutique et plus de 80% des médicaments en développement avec plus de 150 milliards de dollars de chiffre d’affaire pour l’année 2002. Les intermédiaires chiraux sont fortement demandés dans l’industrie pharmaceutique atteignant 15 milliards de dollars de chiffre d’affaire en 2009. D’autres domaines en sont demandeurs avec une répartition d’environ 15% dans l’agrochimie et 5% pour la parfumerie. L’obtention de composés d’intérêt pharmaceutique de façon asymétrique est un réel défi et une réelle nécessi

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21

McNamara, John Martin. "An evaluation of alumina suppoted platinum catalysts for the oxidative dehydrogenation of n butane." Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289903.

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22

Check, Christopher. "Palladium-Catalyzed Inter- and Intramolecular Allylic Oxidation Reactions of Olefins." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1348618169.

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23

Schnobel, Michael. "Partial oxidation of α-olefins over iron antimony oxide catalysts". Doctoral thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/22449.

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Bibliography: p. 179-188.<br>Iron antimony oxide has been known to be an active and selective catalyst for the partial oxidation of propene to acrolein and the oxidative dehydrogenation of 1-butene to 1,3- butadiene. It has become the preferred catalyst for the industrial acrolein formation from propene. The main purpose of this work was to investigate the influence of catalyst parameters such as calcination temperature, Sb:Fe ratio, type of pre-treatment, absence or presence of gaseous oxygen on the activity and selectivity in the partial oxidation of propene. Furthermore the influence of the

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24

黃文健 and Man-kin Wong. "Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31236285.

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25

Chacon, J. N. "Dye photosensitised oxidation of oleic and linoleic esters." Thesis, University of the West of Scotland, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370167.

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26

何麗薇 and Lai-mei Ho. "Asymmetric epoxidation of olefins catalyzed by chiral iminium salts generated in situ from amines and aldehydes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31226048.

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Ho, Chun-yu, and 何振宇. "Asymmetric epoxidation of olefins and cyclization reactions catalyzed by amines." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45014814.

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Endinkeau, K. "Oxidative and nonoxidative effects of ionising radiation on palm olein." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381823.

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Zhang, Chi, and 張弛. "Studies on epoxidation of olefins by IN SITU generated N-sulfonyloxaziridine and ruthenium catalyzed oxidative cleavage ofolefins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31242650.

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30

BELTRANI, MICHELA. "Oxidative Carbonylation of Unsaturated Substrates Promoted by Aryl [Alfa]-Diimine Pd(II) Complexes." Doctoral thesis, Urbino, 2015. http://hdl.handle.net/11576/2628805.

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31

Altun, Yasemin. "Addition Of Carbonyl Compounds To The Cyclic Olefins: Synthesis Of Cyclitols." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12610117/index.pdf.

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ABSTRACT ADDITION OF CARBONYL COMPOUNDS TO THE CYCLIC OLEFINS: SYNTHESIS OF CYCLITOLS Altun, Yasemin M.S., Department of Chemistry Supervisor: Prof. Dr. Metin Balci October 2008, 160 pages Cyclitols have attracted a great deal of attention in recent years owing to biological activities exhibited by them and also their usefulness in the synthesis of other natural products and pharmaceuticals. Carbasugars are also a derivative of cyclitols and they are cyclic monosaccharide analogues which posses &amp<br>#8211<br>CH2OH group in their structure. In this study, novel synthetic strategies

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32

Bazan, Guillermo C. (Guillermo Carlos). "Synthesis and reactivity of high oxidation state molybdenum catalysts for ring opening metathesis polymerization of olefins." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13743.

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El, Kadiri Moulay Youness. "Développement et évaluation de nouveaux systèmes catalytiques pour une chimie plus respectueuse de l'environnement." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00978594.

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La fonctionnalisation sélective de BINOL en position 6 ou 6 et 6' par des groupements 3 - (diméthylamino)prop-1-yn-1-yl est décrite. Cette méthode constitue une stratégie prometteuse pour le développement de nouveaux ligands recyclables. Les complexes de La et Yb correspondants ont été testés dans la réaction d'époxydation des cétones α, β-insaturées. Les complexes d'ytterbium sont les plus efficaces, fournissant les époxydes chiraux attendus avec 90 ou 93% d'excès énantiomérique en conditions homogène et hétérogène, respectivement.Dans le cadre de nos études, nous avons également évalué de no

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34

Burcher, Benjamin. "Novel low-oxidation state iron complexes : reactivity towards unsaturated substrates." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAF022.

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Dans cette thèse nous avons eu pour but d’étudier la réactivité des complexes à bas degré d’oxydation du fer stabilisés par des ligands phosphines vis-à-vis des substrats insaturés. Cet objectif s’inscrit dans une démarche plus large d’accès à des systèmes catalytiques au fer capables de transformer de manière sélective l’éthylène, par la réaction d’oligomérisation, vers des alpha-oléfines linéaires courtes (butène-1, héxène-1, octène-1), ce qui n’a jamais été rapporté dans la littérature. Pour se faire, le passage par le mécanisme métallacyclique de transformation de l’éthylène est la voie pr

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35

Sparks, Darrell Lynn. "Oxidation of lipids in a supercritical-fluid medium." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-03252008-162949.

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Gonzalez, Sonia. "Oxidation and Textural Characteristics of Butter and Ice Cream with Modified Fatty Acid Profiles." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34076.

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Milk fat composition determines specific rheological, sensory and physicochemical properties of dairy products such as texture, melting point, flavor, color, oxidation rates, and viscosity. Previous studies have shown that milkfats containing higher levels of long chain polyunsaturated fatty acids have lower melting points and decreased solid fat contents which leads to softer-textured products. An increased risk of higher oxidation rates can be a disadvantage of high levels of polyunsaturated fatty acids. Three different milkfat compositions were obtained through dietary manipulation of co

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37

Rode, Katharina. "Studies Toward Selenium-pi-Acid Catalyzed Oxidative Functionalizations of Olefinic and Acetylenic Multiple Bonds." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-1491-0.

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Rode, Katharina [Verfasser]. "Studies Toward Selenium-pi-Acid Catalyzed Oxidative Functionalizations of Olefinic and Acetylenic Multiple Bonds / Katharina Rode." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1218299258/34.

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Chintalapudi, Kavyasree. "Development of Real-Time Electro-Organic Reaction Screening Platform Based on Nano-Electrospray Ionization Mass Spectrometry." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1523881317339198.

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Wilhelm, Michael [Verfasser], Wolfgang A. [Akademischer Betreuer] Herrmann, and Janos [Akademischer Betreuer] Mink. "Ionic Catalysts for the Cycloaddition of Carbon Dioxide with Epoxides and the Oxidation of Olefins / Michael Wilhelm. Gutachter: Wolfgang A. Herrmann ; János Mink. Betreuer: Wolfgang A. Herrmann." München : Universitätsbibliothek der TU München, 2015. http://d-nb.info/1075858240/34.

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Wilkerson, Troy A. "A comparative study of the thermal oxidative stability of high oleic acid sunflower and polyunsaturated soybean oil blends." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08222008-063712/.

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Machado, Yguatyara de Luna. "Avalia??o da estabilidade oxidativa e determina??o da cin?tica de oxida??o de ?leos vegetais, ?cido oleico e biodiesel utilizando o m?todo PetroOXY (ASTM D7545)." PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA QU?MICA, 2014. https://repositorio.ufrn.br/jspui/handle/123456789/21671.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-16T18:03:33Z No. of bitstreams: 1 YguatyaraDeLunaMachado_TESE.pdf: 3932579 bytes, checksum: ff6076d950bb4fc98594b19efe56ff78 (MD5)<br>Approved for entry into archive by Elisangela Moura (lilaalves@gmail.com) on 2017-01-16T18:14:01Z (GMT) No. of bitstreams: 1 YguatyaraDeLunaMachado_TESE.pdf: 3932579 bytes, checksum: ff6076d950bb4fc98594b19efe56ff78 (MD5)<br>Made available in DSpace on 2017-01-16T18:14:01Z (GMT). No. of bitstreams: 1 YguatyaraDeLunaMachado_TESE.pdf: 3932579 bytes, checksum: ff6076d950bb4fc98594b19efe56ff78 (M

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Ferrari, I. "MODELLING THE PERFORMANCES OF TRADITIONAL AND INNOVATIVE FATS IN A PLUM CAKE FORMULATION." Doctoral thesis, Università degli Studi di Milano, 2012. http://hdl.handle.net/2434/169033.

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Finding alternatives to animal and saturated fats is an attractive challenge in bakery. In a first part of the research, effects of fat melting characteristics and fat quantity in a plum cake formulation were studied by a Central Composite Design (CCD), using palm oil/palm olein blends as fat. Cakes produced with butter (BC) or anhydrous butter (ABC) were taken as the references. Response surface models demonstrated that cake texture was significantly affected (p<0.01) both by fat content and percentage of olein in the fat blend, while volume was influenced (p<0.01) only by fat content. An opt

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44

Al-Shudiefat, Abd Al-Rahman. "Protective role of olive oil and its major component oleic acid in TNF-α induced remodeling subsequent to myocardial infarction in rats". Springer, 2013. http://hdl.handle.net/1993/20074.

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Oxidative stress and inflammation are important factors involved in the progression of heart failure. An important cytokine produced during myocardial infarction (MI) is tumor necrosis factor alpha (TNF-α). TNF-α may induce oxidative stress, cell damage, apoptosis and cardiac dysfunction. Considering the anti-inflammatory and anti-oxidant properties of extra-virgin olive oil and its major component (80%) oleic acid (OA), and their benefits to the cardiovascular system, we hypothesized that the negative effects of TNF-α in the pathogenesis of heart failure will be mitigated by olive oil consump

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45

Brechot, Philippe. "Oxycarbonylation des olefines en presence de nitrites d'alkyle catalysee par les complexes du palladium." Paris 6, 1988. http://www.theses.fr/1988PA066107.

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Savova, Bistra. "Étude du dopage de catalyseurs de déshydrogénation oxydante de l’éthane et du propane." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10341/document.

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Les réactions de déshydrogénation oxydante du propane et de l’éthane ont été étudiées respectivement sur des catalyseurs à base d’oxydes alcalino-terreux (OAT) dopés néodyme et des catalyseurs à base d’oxyde de nickel dopés par différents métaux. Deux méthodes de préparation des solides OAT dopés au néodyme ont été comparées. La caractérisation par analyses DRX montre la formation de solutions solides avec des défauts (lacunes, dislocations). La formation d’agglomérats de néodyme a été également observée. Les tests catalytiques réalisés montrent que le dopage au néodyme augmente la conversion

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Duval, Maryne. "Ligands bidentes pour la synthèse de complexes de cuivre et d'or : étude de leur réactivité." Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30018.

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Cette thèse s'est intéressée à la synthèse de complexes de cuivre(III) et à l'étude de leur réactivité vis-à-vis des étapes élémentaires composant les cycles catalytiques des processus d'oligomérisation d'oléfines (insertion migratoire, ß-H élimination/transfert, isomérisation, couplage oxydant). Dans ce but, une méthodologie combinant calculs théoriques et tests expérimentaux a été exploitée. Le premier chapitre de cette thèse présente de manière générale l'oligomérisation d'éthylène pour la formation d'a-oléfines linéaires et explique l'intérêt d'utiliser un catalyseur à base de cuivre d'un

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Paquit, Bénédicte. "Nouvelles méthodologies pour le clivage oxydant de doubles liaisons d'acides gras." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10291/document.

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Au niveau industriel, l'accès aux acides azélaïque et pélargonique, composés à forte valeur ajoutée, est possible grâce à une réaction d'ozonolyse de l'acide oléïque. Cependant, cette méthode présente certains désavantages sur le plan écologique. Le but de cette étude a donc été de développer une méthode alternative à ce procédé industriel, visant à limiter autant que possible les impacts écologiques, directs ou indirects, lors de la synthèse des acides azélaïque et pélargonique. Nous avons ainsi montré qu'un clivage en deux étapes peut être préférable à un clivage oxydant en une étape. Notre

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Ranko, Romanić. "HEMOMETRIJSKI PRISTUP OPTIMIZACIJI TEHNOLOŠKIH PARAMETARA PROIZVODNJE HLADNO PRESOVANOG ULJA SEMENA VISOKOOLEINSKOG SUNCOKRETA." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=95781&source=NDLTD&language=en.

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U okviru ove doktorske disertacije ispitani su i utvrđeni optimalni uslovi za proces lju&scaron;tenja semena suncokreta visokooleinskog tipa, kao sirovine za proizvodnju ulja. Sprovedena istraživanja su dala podatke o optimalnim vrednostima sadržaja vlage u semenu i pritiska vazduha u lju&scaron;tilici na osnovu kojih je utvrđen model za lju&scaron;tenje semena. Sprovedenim istraživanjima obuhvaćeno je i ispitivanje uticaja promenljivih tehnolo&scaron;kih parametara, sadržaja ljuske u opsegu od 0 do 20% i sadržaja nečistoća u opsegu od 0 do 10% na sastav i kvalitet hladno presovanih ulja i pog

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Godard, Anaïs. "Nouveaux procédés verts d'oxydation de l'acide oléique." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0155/document.

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Dans un contexte de raréfaction des ressources pétrolières et de pressions environnementales, l’industrie chimique a besoin d'innover en développant de nouvelles filières destinées à l'élaboration de bioproduits, à partir de matières premières d'origine végétale. Les acides gras insaturés obtenus à partir des huiles végétales, constituent ainsi une ressource renouvelable à fort potentiel permettant de diversifier les approvisionnements d'origine pétrolière. Notre intérêt s'est porté sur la réaction de scission oxydative d’acides gras insaturés pour conduire à des monoacides et diacides à chaîn

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