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<dc:title xml:lang="fr">L'activation C-H pour la synthèse de petites molécules chirales</dc:title>
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<dc:subject xml:lang="fr">Cyclopropanes</dc:subject>
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<dc:subject xml:lang="fr">Fonctionnalisation des liaisons C-H</dc:subject>
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<dc:subject xml:lang="en">Cyclopropanes</dc:subject>
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<dcterms:abstract xml:lang="fr">Les molécules organiques sont composées presque exclusivement de liaisons C-C et C-H, et la plupart d'entre elles sont inertes. La conversion de ces liaisons abondantes et peu réactives en groupements fonctionnels souhaités directement a suscité l'intérêt de nombreux chimistes. L'activation de liaisons C-H est une approche considérablement plus durable par rapport à l'interconversion de groupements fonctionnels préexistants réactifs en redéfinissant les liaisons C-H inertes comme des groupes fonctionnels latents. Aujourd’hui, l'activation de C-H est devenue un outil puissant pour la synthèse organique.Les petites molécules chirales tridimensionnelles sont attractives pour les industries pharmaceutiques et agrochimiques, car une sélectivité accrue et moins d'effets secondaires peuvent être attendus en raison des interactions spécifiques de ces composés avec les sites enzymatiques. Notre groupe s'intéresse particulièrement aux motifs cyclopropane et biocyclo[1.1.1]pentane (BCP), et notre recherche se concentre sur l'activation de liaison C-H de ces noyaux moléculaires.Dans cette thèse, nous discutons de la résolution cinétique des cyclopropanes β-substitués, de la fonctionnalisation des liaisons C-H des BCPs et du couplage C-O avec des iodures catalysé par le Pd(I) dans la tautomérisation des carboxamides.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Organic compounds contain as a principal building block C-C and C-H bonds, and most of them are inert. How to convert these abundant unreactive bonds to desired functional group directly has attracted strong chemists’ interest. C-H activation is a significantly more sustainable approach compare to the interconversion of reactive pre-existing functional groups by redefining the inert C-H bonds as latent functional groups. And now C-H activation has become a powerful tool for synthesis sciences.Small, three-dimensional chiral molecules are attractive to pharmaceutical and agrochemical industries as increased selectivity and less side effects may be expected due to specific interactions of such compounds with enzymatic sites. Our group is particularly interested in cyclopropane and biocyclo[1.1.1]pentane (BCP) scaffolds and my research focused on C-H activation of these molecule cores.In this thesis, we discuss about the kinetic resolution of β-substituted cyclopropanes, C-H functionalization of BCPs and the Pd(I)-catalyzed carboxamide tautomerization C-O coupling with iodides.</dcterms:abstract>
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