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Rozprawy doktorskie na temat „Cycloalkanes”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 6 września 2023

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Sprawdź 33 najlepszych rozpraw doktorskich naukowych na temat „Cycloalkanes”.

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1

Warburton, Elizabeth Jean. "The metabolism of cycloalkanes by different species of Xanthobacter." Thesis, Nottingham Trent University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329184.

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2

Shirley, Neil John. "Synthesis of compounds of natural and unnatural origin by intramolecular alkylations." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phs558.pdf.

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3

Parkinson, Nigel Christopher. "Nucleoside and nucleotide analogues containing fluorine." Thesis, Durham University, 1993. http://etheses.dur.ac.uk/5639/.

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The work contained in this thesis is divided into four sections detailing the formation of (diethoxyphosphinyl)difluoromethylene substituted cycloalkanes and alkenes and their chemistry, as well as the syntheses of purine and pyrimidine substituted polyfluoroethers:(i) The methodology for the introduction of the (diethoxyphosphinyl)difluoromethylene group was studied and extended, with specific reference to cyclic systems. The group was successfully introduced into cyclic alkenes with (diethoxyphosphinyl)difluoro- methylene zinc bromide and saturated systems with (diethoxyphosphinyl)difluorome

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4

Gray, Gary. "The oxidation of cycloalkanes using dioxygen catalysed by homogeneous and supported metalloporphyrins." Thesis, University of York, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245972.

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5

Budkina, Darya S. "Ultrafast photophysical and photochemical dynamics of polyhalogenated alkanes, cycloalkanes, and transition metal complexes." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1553686775405944.

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6

Navasero, Neenah. "Synthetic routes to non-symmetric tropones." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101647.

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The synthesis of substituted non-symmetric tropones has proven to be a considerable synthetic challenge. Particularly, a 3,4,6-tnsubstituted tropone which is required for the total synthesis of CP-225,917 is currently being undertaken by our group.<br>Two approaches towards the synthesis of substituted tropones are presented. Both utilize linear diene precursors which are closed to 7-membered cycloheptene rings via ring closing metathesis. In the first method, linear precursors are synthesized by addition of nucleophilic substituents to carbonyl groups to form alcohol groups. After forming the

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7

McCleary, Michelle Angela, and n/a. "Synthetic and Structural Studies on the Novel Formation of Bicyclo[n.2.0]alkan-1-ols." Griffith University. School of Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040520.143342.

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Reaction of phenyl vinyl sulfoxide with the lithium enolates of simple ketones of varying ring size (cyclopentanone, cycloheptanone and cyclooctanone) under controlled cyclisation conditions followed by subsequent oxidation resulted in the formation of the bicyclo[n.2.0]alkan-1-ols 253-255, 262, 263, 265, 268 and 269 in conjunction with alkylated species 256, 257, 264, 266 and 267. The ratio of bicyclo[n.2.0]alkan-1-ols to alkylated ketone formation observed was dependent on a number of factors including the variation of enolate reactivity between the different ring sizes, conversion of phenyl

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8

McCleary, Michelle Angela. "Synthetic and Structural Studies on the Novel Formation of Bicyclo[n.2.0]alkan-1-ols." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366615.

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Reaction of phenyl vinyl sulfoxide with the lithium enolates of simple ketones of varying ring size (cyclopentanone, cycloheptanone and cyclooctanone) under controlled cyclisation conditions followed by subsequent oxidation resulted in the formation of the bicyclo[n.2.0]alkan-1-ols 253-255, 262, 263, 265, 268 and 269 in conjunction with alkylated species 256, 257, 264, 266 and 267. The ratio of bicyclo[n.2.0]alkan-1-ols to alkylated ketone formation observed was dependent on a number of factors including the variation of enolate reactivity between the different ring sizes, conversion of phenyl

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9

Rogers, Bruce. "Approaches to cyclobutane containing cage compounds." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299584.

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10

Skibiński, Maciej. "Effect of gem-difluorination on the conformation of selected hydrocarbon systems." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/7058.

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Owing to its unique electronic properties, the CF₂ group has the potential to affect the conformation and polarity of molecules. The Introduction provides an overview of the conformational effects induced by the incorporation of fluorine into hydrocarbons, e.g. gauche effect, 1,3-C,F bond repulsion and angle deviation in organofluorine compounds. A summary of synthetic strategies for the introduction of the gem-difluoride motif into organic molecules is also presented. In order to explore the conformational impact of the CF₂ group in alicyclic hydrocarbon systems, cyclododecane was employed as

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11

Yasrebi, Kaveh [Verfasser], Andreas [Gutachter] Hilgeroth, Sibel Gutachter] Süzen, and Michael [Gutachter] [Lalk. "Synthesis and biological evaluation of trisindolyl-cycloalkanes and bis-indolyl naphthalene small molecules as potent antibacterial and antifungal agents / Kaveh Yasrebi ; Gutachter: Andreas Hilgeroth, Sibel Süzen, Michael Lalk." Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2020. http://d-nb.info/1237685796/34.

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12

Wang, Chang-Sheng. "Selective catalytic C(sp²)–H and C(sp³)–H bond functionalizations for the synthesis of phosphorus and nitrogen containing molecules." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S106/document.

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Dans la thèse de doctorat, nous avons développé une approche efficace pour la modification rapide d'oxydes d'arylphosphines via la fonctionnalisation de liaisons C-H en position ortho du groupement P=O catalysée par le ruthénium (II) en présence des alcènes. Intéressement, l'ajustement du pH du milieu réactionnel permet de contrôler la sélectivité de la réaction à savoir alkylation or oléfination. La réduction des oxydes de phosphines fonctionnalisées permet la formation d'arylphosphines portant un carboxylate flexible. Dans le second objectif, un couplage C(sp3)–H /N-H oxydatif catalysé par l

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13

Rakotoalimanana, Andrianjafy Darwin. "Pyrolyse du n-butylcyclohexane à haute pression (100 bar) : application à la stabilité thermique des naphtènes dans les fluides pétroliers HP/HT." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0029/document.

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L’objectif de cette thèse est de mieux comprendre les réactions de craquage thermique des naphtènes (hydrocarbures saturés cycliques) se déroulant dans les réservoirs pétroliers. Les naphtènes, représentant une famille importante de composés dans les huiles « Haute Pression/Haute Température » des gisements profonds, ont fait l’objet de très peu d’études dans ces conditions. La pyrolyse du n-butylcyclohexane a été étudiée à haute pression (100 bar) dans des réacteurs fermés en tubes en or, entre 300°C et 425°C. Le n butylcyclohexane produit majoritairement des n-alcanes (C1 à C4), d’autres nap

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14

Schneider, Marc Andre. "Iridium- und Rhodiumhydrido-Komplexe mit 1,8-Bis(diorganylphosphino)anthracen-Liganden als thermostabile homogene Katalysatoren für die Dehydrierung von Alkanen." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968540732.

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15

Sirjean, Baptiste. "Étude cinétique de réactions de pyrolyse et de combustion d'hydrocarbures cycliques par les approches de chimie quantique." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL093N/document.

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Les carburants dérivés du pétrole constituent la première source mondiale énergétique et leur approvisionnement constitue un défi actuel majeur impliquant des enjeux économiques et environnementaux cruciaux. Une des voies les plus efficaces pour peser simultanément sur ces deux enjeux passe par la diminution de la consommation en carburant. La simulation numérique constitue dès lors un outil précieux pour améliorer et optimiser les moteurs et les carburants. Les modèles chimiques détaillés sont nécessaires pour comprendre les phénomènes d’auto-inflammation et caractériser la nature et les quan

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16

Ucak-Astarlioglu, Mine Gunes. "The electronic structure and spectroscopy of diarylidene-cycloalkanones and their protonated cations." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0506103-160044.

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Thesis (Ph. D.)--Worcester Polytechnic Institute.<br>Keywords: polyene ketones; diarylidene-cycloalkanones; spectroscopy; electronic structure; protonated cations; photochemistry; electronic states. Includes bibliographical references (p. 189-191).

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17

Pi, i. Boleda Bernat. "Supramolecular studies on the behaviour of different chiral cycloalkane-based compounds as receptors, gelators and surfactants." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/400575.

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En aquesta tesi, s’han estudiat quatre diferent sistemes supramoleculars com a receptors, gelificadors o tensioactius. S’ha analitzat la influència de diferents factors estructurals de la molècula senzilla en la seva propietat supramolecular final. S’han utilitzat diferents estratègies per a preparar els compostos estudiats. La combinació de diferents tècniques ens ha permès entendre millor aquests sistemes obtenint un resultat sinèrgic. Els resultats d’aquesta tesi estan dividits en quatre capítols: 1) Diferents receptors d’anions tripodals s’han sintetitzat i la seva complexació amb difer

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18

Fresu, Sonia [Verfasser]. "Synthesis of bridged bicycles and macrocycles from cycloalkanones via tandem reactions and ring expansion / Sonia Fresu." Dortmund : Universitätsbibliothek Technische Universität Dortmund, 2004. http://d-nb.info/1011532913/34.

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19

Therene, Hubert. "Etude physico-chimique de la fraction dite saturée des bitumes." Rouen, 1987. http://www.theses.fr/1987ROUES006.

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Les composés saturés des bitumes c'est-à-dire les alcanes et les cyclanes sont séparés des bitumes par précipitation sélective et chromatographie d'adsorption. Ils sont analysés par des méthodes spectrométriques et chromatographiques. L'influence des composés saturés sur les démixtions et les propriétés mécaniques dynamiques du bitume est déterminée par microscopie en contraste de phase et en lumière polarisée

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20

Lai, Guan-Hong, and 賴冠宏. "The Conformations of Cycloalkanes and The Conformations and Biochemical Activities of Both Epothilones and Macrolides." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/40138928306288659632.

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碩士<br>國立成功大學<br>化學系碩博士班<br>91<br>We discuss the conformations of cycloalkanes(C12H24、C14H28、C16H32、C18H36、C20H40) and the relations between conformations and biochemical activities of both Epothilones and Macrolides by semi-emprcial AM1 quantum mechanical calculation methods with PC-SPARTAN. 　　The calculation results show that the torsional energy of C-C bond in cycloalkanes is so low, even lower than 20 kJ/mol, reveals cycloalkanes are easily affected by external force so as to occur many conformation variations. 　　In conformation, only dihedral angle locating the torsional position changes l

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21

Lu, Wan-Sam, and 呂宛珊. "Theoretical study on the gas-phase ion-molecule SN2 and E2 reactions of halides of cycloalkanes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/e9496v.

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碩士<br>國立中正大學<br>化學暨生物化學研究所<br>103<br>This thesis consists of three chapters. We studied the bimolecular nucleophilic substitution (SN2) and bimolecular elimination (E2) reactions of cyclic and noncyclic alkyl halides. In Chapter 1, we studied RX + SH( R=ethyl (C2H5), isopropyl (C3H7), tert-butyl (C4H9), cyclopentyl (C5H9), cyclohexyl (C6H11), n-propyl (C3H7), n-butyl (C4H9), n-pentyl (C5H11), n-hexyl (C6H13)；X=Cl、Br、I). For reactions of C4H9X (tert-butyl，X=Cl、Br、I) + SH and C5H9I (Iodocyclopentane) + SH, the elimination reactionas were favored . The substitution reactions were the most fe

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22

Kim, Jungchul. "Natural product synthesis via cyclobutanes : part I, Asymmetric synthesis of (+)-byssochlamic acid, part II, An approach to the nootropic agent huperzine A." Thesis, 2000. http://hdl.handle.net/1957/32732.

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PART I. Asymmetric syntheses of both natural (+)- and nonnatural (-)- byssochlamic acid via a [2+2] photoaddition-cycloreversion strategy are described. X-ray crystallographic analysis of the cyclohexylamine salt 99 showed that the structure of the monomethyl ester 100 from esterase hydrolysis of 44 was originally misassigned as 56. The enantiomeric relationship of the two diolides 106 and 70 permitted syntheses of nonnatural byssochlamic acid (-)-3 and natural byssochiamic acid (+)-3 from enantiopure alcohol (+)-64 and from its enantiomer (-)-110, respectively. Through the use of (��)-103 to

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23

Shirley, Neil John. "Synthesis of compounds of natural and unnatural origin by intramolecular alkylations / by Neil John Shirley." Thesis, 1987. http://hdl.handle.net/2440/21578.

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24

Kesavan, V. "Studies On Catalytic Oxygen Transfer Reactions In Organic Synthesis." Thesis, 1999. http://etd.iisc.ernet.in/handle/2005/1619.

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25

李晏成. "Silicon-directed hydroxymethylation of ��-trimethylsilyl cycloalkanones through anodic oxidation." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/33232531056085255143.

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26

張文昇. "Photo-cyclization of a-iodo cycloalkanones bearing an allenic side chain." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/56860367154407452025.

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碩士<br>國立清華大學<br>化學系<br>89<br>The main goal of the synthesis is to study the Photo-induced cyclization reaction of α- iodo cycloalkanones bearing an allenic side chain. We first use the α- iodo cycloalkanone compound 71a-b as starting material, introduce the side chain of allene from β-position successfully by 1,4-Michael addition and then follow with Photo-induced Electron Transfer（PET） cyclization reaction, we obtain the 5、5-fused, 6、5-fused bicycle compounds 73a-b and 74a-c. Besides, we compare the difference of reaction by using Iodide and Slow-addition radical cyclization. From the results

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27

Shun-Yuan, Luo, та 羅順原. "α-Carbonyl Radical Cyclization of Cycloalkanones Bearing an Allenic Side Chain". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/55199829837733977359.

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碩士<br>國立清華大學<br>化學系<br>88<br>Abstract We prepared α-iodo ketone, and used iodo-atom transfer to form α-keto radical. α-iodo radical is cyclized with allenic side chain to form vinyl spiro compound.

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28

Hsien-Hsun, Lin, та 林賢勳. "Photoinduced Spiro Cyclization of α-Iodo Cycloalkanones Bearing an Allenic Side Chain". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/54008135954626882676.

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29

林賢勳. "Photoinduced spiro cyclization of A-iodo cycloalkanones bearing an allenic side chain." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/54097484830229205380.

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30

Lee, Fang-Chen, and 李芳城. "Iodine Atom Transfer Cyclization of a-Iodo Cycloalkanones Mediated by AlCl3 / ICl." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/37909763745965174778.

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31

Zhang, Jianbin. "Ring-opening of cycloalkane epoxides and aziridines with aromatic amines : toward the total synthesis of pactamycin." Thèse, 2009. http://hdl.handle.net/1866/3794.

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Résumé Cette thèse consiste en trois thèmes résumés dans les paragraphes ci-dessous. L’influence de différents groupements protecteurs du groupe hydroxyle lors des réactions d’ouverture des cis- et trans- 3-hydroxy-1,2-époxycycloalcanes a été étudiée. Il a été montré que Yb(OTf)3 constituait un catalyseur doux pour l’ouverture régiosélective de cycles afin d’obtenir les -anilino cycloalcanols correspondants avec de bons rendements. Le chauffage du milieu réactionnel dans le toluène comme solvant a permis d’augmenter la cinétique de la réaction, au dépend du rendement. La partie aniline a été

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32

Alshanqiti, Ahmed M. "Cycloalkane Metathesis using a Bi-metallic System: Understanding the Effect of Second metal in Metathesis Reaction." Thesis, 2018. http://hdl.handle.net/10754/630968.

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Over the past decades, since the discovery of a single–site silica-supported catalyst for the alkane metathesis reaction by our group, we have been extensively working on the development of supported catalytic systems for the improved alkane metathesis reaction. During these developments, we understand the reaction mechanism and reached a new perspective for the synthesis of various supported bimetallic systems via the surface organometallic chemistry (SOMC) approach. Recently, with this bi-metallic system, we got a very high TON (10000) in propane metathesis reaction. As these catalysts are v

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33

LIAO, BEN-RUI, and 廖本瑞. "Counterattack reagent hexamethyldisilane in syntheses of allyltrimethylsilanes,oximes and the photoreaction of ▫-trimethylsilyl cycloalkanones." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/16731515827772518479.

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