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Добірка наукової літератури з теми "Cyclophanes – Synthèse (chimie)"
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Статті в журналах з теми "Cyclophanes – Synthèse (chimie)"
"Functionalization Studies of C₆₀ and Synthetic Approaches to Endohedral Metallofullerenes." CHIMIA 52, no. 3 (March 25, 1998): 118. http://dx.doi.org/10.2533/chimia.1998.118.
Повний текст джерела"Functionalization Studies of C₆₀ and Synthetic Approaches to Endohedral Metallofullerenes." CHIMIA 52, no. 3 (March 25, 1998): 118. http://dx.doi.org/10.2533/chimia.1998.118.
Повний текст джерелаДисертації з теми "Cyclophanes – Synthèse (chimie)"
Bogdan, Niculina Daniela. "Design, synthèse, analyse structurale et réactivité de nouveaux cyclophanes." Rouen, 2006. http://www.theses.fr/2006ROUES030.
Повний текст джерелаWe reported here the synthesis and the structural analysis of [7. 7]pyridinophanes, [4. 4]cyclophanes diethers and [4. 4]cyclophanes diesters which exhibit 1. 3-dioxanes rings and mono and di ketones. The structural analysis was carried out using X-ray diffractometry, NMR and mass spectrometry. These investigations revealed the conformational behaviour of the molecules. Due to their dynamics the [7. 7]cyclophanes and some of the [4. 4]cyclophanes were considered molecular rotors. The formation of supramolecular aggregates for some of the macrocycle compounds with molecules of solvent, the intra and intermolecular interactions (π-stacking, CH-π and C=O-π) and the formation of the channels which embed (or not) molecules of solvents was also revealed
Florian, Maria Carmen. "Design, synthèse et analyse structurale de nouvelles molécules hôtes : Macrocycles et cyclophanes." Rouen, 2006. http://www.theses.fr/2006ROUES034.
Повний текст джерелаIn the first part, we reported the synthesis of new dispiro-1. 3-dioxane compounds as syn and anti isomers. The synthesis of new macromolecules embedding semiflexible dispiro-1. 3-dioxane units was performed by high-dilution technique and using the template effect. The design of these macrocyclic compounds is based on the stereochemistry of the precursors which show a favourable pre-organization for the incorporation in macrocycle systems. In the second part, we reported the synthesis and the stereochemistry of new 1. 3. 5-triacetylbenzene derivatives and the attempts to obtain new “cage” molecules from these derivatives
Balog, Mirela. "Synthèse et analyse structurale de nouveaux coronands, cyclophanes et composés 1,3-dioxaniques." Rouen, 2004. http://www.theses.fr/2004ROUES004.
Повний текст джерелаThe stereochemistry investigations performed with 1,3-dioxane derivatives obtained from meso-2,4-pentanediol, 2,6-diacetylpyridine and 5-aryl-2-furaldehydes, shown in the first part of this work, revealed the axial or equatorial preference for several substituents at position 2 of the 1,3-dioxane ring. The atropisomery of some derivatives exhibiting aromatic substituents and the unexpected mass-spectrometry discrimination of cis and trans isomers of some 2,4,6-substituted-1,3-dioxanes were discussed. In the second part of this work we report the synthesis and the structural analysis of a series of coronands with spirane units and cyclophanes which embed in their structure 1,3-dioxane rings. The design of these macrocycle compounds is based on the stereochemistry of the precursors which show a favourable pre-organization for the incorporation in macrocycle systems. The structural analysis is based on high-field NMR investigations (ROESY, NOESY and dynamic experiments), X-ray diffractometry (six molecular structures) and mass spectrometry experiments (MALDI, ESI-MS). These investigations correlate the size of the cavities of different macrocycles with the selectivity of the coordination for different alkali cations and reveal the supramolecular aggregates formed by some of the macrocycle compounds with molecules of solvent and the intra and intermolecular interactions (p-stacking) among the aromatic rings. The tandem flipping of the two 1,3-dioxane rings of the para-para cyclophane, suggesting the dynamics of a rocking chair, was observed as the first example showing the concerted flipping of two six-membered rings incorporated in the same macrocycle
Ettahiri, El Ouahabi Abdelhak. "Synthèse, étude structurale et conformationnelle de paracumylcalixarenes." Lyon 1, 1994. http://www.theses.fr/1994LYO10026.
Повний текст джерелаKrieger, Jean-Philippe. "Réarrangements de cycles et activation de liaisons C-H : synthèse de macrocycles." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066765.
Повний текст джерелаThere is currently a growing interest for macrocycles as scaffolds in medicinal chemistry. Therefore, the development of new and efficient strategies toward this class of compounds represents a major challenge. In the first part of our research work, we have been interested in the synthesis of functionalized paracyclophanes incorporating heteroatoms, capitalizing on a Diels-Alder/retro-Diels-Alder reaction sequence from tricyclic dienes and acetylenic dienophiles. The tricyclic dienes precursors could be quickly assembled from simple and readily available building blocks, using a reliable sequence involving a Sonogashira cross-coupling, the semi-hydrogenation of an alkyne and a six-pi electron electrocyclization. The resulting tricyclic dienes were engaged in an intermolecular Diels-Alder/retro-Diels-Alder reaction sequence to provide paracyclophanes possessing a trisubstituted aromatic ring. An intramolecular version of this sequence was devised which enabled access to unique paracyclophanes with a cage architecture incorporating a tri- or tetrasubstitued aromatic ring. The second part of our investigations was devoted to the development of transition metal-catalyzed C-H activation mediated macrocyclizations. In the presence of a ruthenium(II) complex as the catalyst, the cyclization of Omethylhydroxamic acids substituted by a carbon chain possessing a remote alkyne could be achieved and provided an efficient access to macrocyclic isoquinolones. A similar transformation was applied to alpha,betaunsaturated hydroxamic acids derivatives substituted by an acetylenic chain, using a catalytic system based on a rhodium(III) complex, to afford macrocyclic pyridones
Dron, Paul Ionut. "Cyclopyridinophanes, capteurs moléculaires : synthèse, structure et propriétés électriques." Littoral, 2007. http://www.theses.fr/2007DUNK0178.
Повний текст джерелаThis thesis reports the synthesis of cyclo(bis-paraquat p-phenylene p-phenylene-carbonyle) tetrakis(hexapluorophosphate) (« CETEBOX »). This one exists in three tautomeric structures proved by NMR spectra, potentiometric titration and synthesis. Through its cycloimmonium ylide, in a [3+2] cycloaddition reaction, this compound furnishes a fluorescent cyclophane sensor. This sensor shows inclusion properties towards Volatile Organic Compounds. By a coupling reaction between the fluorescent indolizine sensor and 6-deoxy-6-amine-β-cyclodextrin a new dual cavity (β-cyclodextrine et cyclophane) fluorescent sensor is synthetized. All new structures reported in this thesis have been established by IR, RMN (1H-RMN, 13C-RMN, TOCSY, COSY, NOESY, HMQC). According to the molecular modeling methods (MM3, AM1, AM1-COSMO, B88LYPDFT), the found most stable conformers are in good agreement with the experiments. Using a bis(paraquat) salt a new Palladium multicavities complex has been synthetized. The electrical properties of the newly synthetized cyclopyridinophanes have been established by measurements of the electrical conductivity at different temperatures and frequencies. Two of them show very interesting properties concerning conversion of light energy into thermal energy
DANSOU, AHOEFA BENEDICTE. "Recherches sur la synthese totale des 7. 0 metacyclophanes appartenant a la serie de la myricanone." Le Mans, 1999. http://www.theses.fr/1999LEMA1002.
Повний текст джерелаNavarro, Brigitte. "Application de la réaction de cycloaddition [2+2] du dichlorocétène sur les oléfines en synthèse." Grenoble 1, 1990. http://www.theses.fr/1990GRE10114.
Повний текст джерелаBerville, Mathilde. "Radicaux π-conjugués pour la construction et le contrôle redox d'assemblages moléculaires". Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF050/document.
Повний текст джерелаConduction in organic materials is a current challenge addressed by many research groups in order to adapt the structure of materials to their expected applications. The understanding of the conduction requires the exploring of conjugated pi-radicals which are the smallest vector for charge delocalisation. This work focuses on the synthesis of electro-active materials, precursors of conjugated pi-radicals for the self-assembly and the redox control of the physical properties of materials. The first chapter introduces intermolecular interactions that are specific of conjugated pi-radicals and the relevant physical evidences characterizing the interactions. The use of these interactions is then illustrated by selected literature examples. The second chapter describes the synthesis of viologens and the formation of assembly in solution. The third chapter deals with the development of synthesis of bis-viologen cyclophanes and their studying both in the solid state and in solution
Gagnon, Christina. "Synthèse biocatalytique de macrocycles planaires chiraux." Thèse, 2019. http://hdl.handle.net/1866/23707.
Повний текст джерелаMacrocycles represent a unique chemotype in organic chemistry, with applications ranging from pharmaceuticals, agrochemicals, aromachemicals and material science. An important property of macrocycles is the possibility of displaying planar chirality yielding distinct atropisomeric structures with unique properties. Very few generalized techniques capable of controlling atropisomerism in macrocycles exist, rendering their synthesis extremely challenging. We have achieved the first example of enantio- and atroposelective biocatalytic synthesis of planar chiral p-cyclophanes. Employing a commercially available immobilized lipase (CALB) and simple pro-chiral starting materials, we were able to generate 23 different structures with yields ranging from 11 to 88 %. SFC analysis permitted evaluation of the enantioenrichment of the different macrocycles, which ranged from 96 to >99 % ee. Importantly, planar chiral macrocycles having halogen or borylated substituents are capable of molecular diversification outside the boundaries of what may be tolerated by the enzyme. Our discovery paves the way for the use of biocatalysts in the control of atropisomerism during macrocycle formation.