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Dissertations / Theses on the topic 'Spiro compound'

Author: Grafiati

Published: 20 April 2024

Last updated: 31 July 2025

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1

Brouillac, Clément. "Systèmes π-conjugués donneur-accepteur : composés spiro et nano anneaux pour des diodes organiques électrophosphorescentes". Electronic Thesis or Diss., Université de Rennes (2023-....), 2023. http://www.theses.fr/2023URENS097.

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L’électronique organique (EO) s’articule autour de l’utilisation des semi-conducteurs organiques (SCOs). Les diodes organiques électroluminescentes (OLEDs) font partie des technologies électroniques les plus matures et sont déjà présentes dans nos smartphones, ordinateurs et téléviseurs. Durant cette thèse, nous nous sommes particulièrement intéressés à l’élaboration de matrices hôtes pour la seconde génération d’OLEDs : les diodes organiques électrophosphorescentes (PhOLEDs). Deux design moléculaires différents ont été conçus avec deux objectifs différents. Le premier objectif consiste à déve

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2

Kowada, Toshiyuki. "Studies on Synthesis and Properties of Heteroarene-Containing π-Conjugated Compounds Having Spirofluorene Moieties". 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120879.

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3

Mohammed, Shahid. "Manganese (3) acetate oxidative free radical cyclisations : the synthesis of novel functionalised spiro and fused acetal compounds." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317645.

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4

Dalinot, Clément. "Synthèse de composés spiro pour l'électronique plastique : relations structure-propriétés." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0070.

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De par leur versatilité synthétique, les matériaux moléculaires pour l’électronique ou la photonique organique peuvent être conçus sur mesure afin d'intégrer, de façon optimale, divers types de dispositifs. Dans ce contexte, ces travaux de thèse se sont consacrés à l'élaboration et l'étude de composés spiro pour des applications en électronique organique. Ainsi, après un premier chapitre introductif présentant un état de l’art focalisé sur l'utilisation des composés spiro au sein de dispositifs électroniques, les deux autres chapitres seront consacrés à l'élaboration et la mise en oeuvre de no

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5

CRISTOFARO, Dario. "Simultaneous recovery of cellulose and other value-added compounds from orange waste & Synthesis of spiro and ureidic compounds for modulation studies of mptp protein." Doctoral thesis, Università degli studi di Ferrara, 2017. http://hdl.handle.net/11392/2487943.

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This thesis is divided in two separate sections, both conducted in the Department of Chemical and Pharmaceutical Sciences under the supervision of Prof. Dr. Simonetta Benetti and Prof. Dr. Claudio Trapella. The first project aimed to demonstrate the opportunity of utilizing a new type of citrus waste, called decanter centrifuge orange waste (DCOW), to extract cellulose and other constituents of the matrix. These could be sold as either mixture or isolated compounds (or derivatives) thus avoiding environmental dangerous waste disposal. A sequence of extraction steps and pH-dependant treatments

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6

Schäfer, Christian. "Reactivity of acetylenic ω-keto-esters towards transition metal complexes : synthesis of polycyclic motives of natural products". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF006/document.

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Les travaux décrits dans ce mémoire ont pour objet l’étude de la réactivité des ω-céto-esters acétyléniques vis-à-vis des métaux de transition. Lorsque ces composés sont traités avec une mélange Ti(OiPr)4/iPrMgBr, la formation d’alcools allyliques bicycliques est observée avec une totale diastéréosélectivité par rapport à la jonction de cycle (cis) et une configuration (E) pour la double liaison. Il a été montré que ces produits peuvent être transformés en lactone α,β-insaturé, sous-structures de produits naturels. La cycloisomérisation d’alcynyl cétones catalysées par des sels d’Ag(I) conduit

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7

Garcia, Fábio Dutra. "Novos Espirocromenil-Trifluoretanonas a partir de Reações de Trifluoracetilação de Adutos de Kabbe e seus Espiro[diidrocromeno-cicloalcan]pirazóis e Isoxazóis Derivados." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/10564.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work describes firstly an efficient and regioselective method for the synthesis of a new series of 2,2,2-trifluoro-1-[4-methoxy-spiro(2H-chromen-2,1 -cycloalkan)-3-yl]ethanones from the Kabbe adducts (spiro[chroman-2,1 -cycloalkan]-4-ones). Yields of 38 % to 61 % were obtained when trifluoroacetylation reactions of mixtures of enolethers and/or acetals derived from four spiro ketones (Kabbe adducts) were performed at a temperature of 45 oC and employing anhydrous chloroform as the solvent. Subsequently, when the respective tri

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8

Kern, Nicolas. "Réactivité d'azacycles en catalyse à l'or." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF012/document.

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La catalyse organométallique est l'un des piliers de la synthèse chimique moderne. Elle permet notamment la formation rapide de liaisons carbone-carbone et carbone-hétéroatome, processus les plus importants pour la fabrication des milliers de composés nécessaires à la vie contemporaine. Elle répond également aux critères d'économie d'atomes et d'énergie, et de réduction des déchets, des risques et des coûts de mise en oeuvre d'une réaction chimique.Parmi les thématiques les plus récentes de la synthèse organique, la catalyse homogène à l'or s'est imposée en seulement quelques années comme un o

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9

PITZANTI, PATRIZIA. "Sintesi di molecole organiche enantiomericamente arricchite con l'uso della catalisi organica." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266431.

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The main topic of this thesis is the use of organocatalysis to synthesize organic compounds enantiomerically enriched. The first matter is about the synthesis of α-amino thioester derivatives through a tandem condensation-intramolecular rearrangement-protonation, this is a conceptually novel chiral Brønsted base/ Brønsted acid catalytic method that provides a number of important synthetic building blocks in good yields and with moderate and good enantioselectivities. The second topic is concerned to the synthesis of aldols derivatives of pyridine carbaldehydes functionalized in different pos

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10

Li, Qingyi. "Exploring a Symmetry Based Logic for Palau' Amine Synthesis." 2008. http://www4.utsouthwestern.edu/library/ETD/etdDetails.cfm?etdID=370.

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11

Hsieh, Kai-Hong, and 謝鎧鴻. "Organocatalytic Enantioselective Synthesis of Indandione-derived Spiro Compounds Using by Cinchona Alkaloid-derived Organocatalysts." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/19078200983750298607.

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碩士<br>國立臺灣師範大學<br>化學系<br>104<br>In my thiesis, the cinchona alkaloid derived organocatalysts were utilized for the synthesis of cyclohexanone and cyclopentanone derivatives via the covalent or non-covalent asymmetric organocatalysis. In the first part, a new class of coumarin derivatives, bearing an electrophilic and a nucleophilic site at the same time, have been developed. Cinchona alkaloid-derived chiral hydrogen bonding catalysts were utilized to carry out the [3+2] cyclization of these coumarin derivatives with 2-alkylidene indandiones. The corresponding spiro products bearing four stere

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12

Jinn-Kwei, Liang, та 梁晉魁. "The Reductive Decyanation of γ-Cyano-α,β-unsaturated Ketone and its Application to the Synthesis of spiro Compounds and 1,3-Diene Phosphates". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/44756949153294065554.

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碩士<br>國立清華大學<br>化學系<br>90<br>Sequential treatment of bicyclic γ-cyano-α,β-unsaturated ketone 2, readily achieved by Robinson annulation of α-cyano ketone 1 with lithium naphthalenide (LN) and 1,4-diiodobutane or 1,5-diiodopentane gave, in one pot, spiro product 3 in a highly regioselective manner. The dienolate intermediate of the above reductive decyanation process could also be trapped with diethyl chlorophosphonate to give dienyl phosphate 4. Under Lewis acid catalysis conditions, treatment of phosphate 4 with dienophiles gave the highly functionalized Diels-Alder adduct such as compound 5.

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13

Kuang-PoChen and 陳光伯. "1.Synthesis of 1,4-quinones and spiro compounds via manganese(III) acetate mediated free radical reactions2.Ionic methodology in synthesis of isoxazoles and 2,3- dihydrofurans." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/02999461490039992435.

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博士<br>國立成功大學<br>化學系碩博士班<br>101<br>Part 1 Free radical reaction 1.A free radical reaction medicated by manganese(III) acetate between 2-benzoyl-1,4-benzoquiones and 1,3-dicarbonyl compounds produces benzo[c]furan-4,7-diones 34 and anthracene-1,4-diones 35 with chemoselectivity. 2.A free radical cyclization reaction mediated by Mn3+ between TsNa and N-(β-allylsulfonylpropionyl)-4-methoxy- naphthylamine 65 can produce spirolatam 75 without any 6-endo-trig product. Part 2 Heterolytic reaction 1.Highly functionalized isoxazoles can be synthesized from ethyl α- nitrocinnamates 60 and ethyl nitr

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14

Patlevičová, Michaela. "Využití organokatalýzy pro přípravu sloučenin obsahujících kvarterní uhlíkové centrum." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-364227.

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15

Textor, Adriana. "Struktur und Biosynthese von Spirodionsäure und Kirromycin aus Streptomyces sp." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-ACC5-7.

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16

Widjaja, Tien. "Pseudo-helicale und helicale Primärstrukturen aus spiroanellierten vier- und fünfgliedrigen Ringen: Synthesen und chiroptische Eigenschaften." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-B0CA-2.

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17

Bitzer, Jens. "Isolierung und Strukturaufklärung neuer Naturstoffe aus Bakterien und endophytischen Pilzen durch chemisches Screening." Doctoral thesis, 2005. http://hdl.handle.net/11858/00-1735-0000-0006-AD48-A.

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