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<dc:title xml:lang="fr">Hydrométallation stéréosélective de triples liaisons C≡C polarisées catalysée par des métaux de transitions</dc:title>
<dcterms:alternative xml:lang="en">Regio-and stereocontrolled metal-catalyzed hydrometallation of polarized C≡C triple bonds</dcterms:alternative>
<dc:subject xml:lang="fr">Hydrometallation</dc:subject>
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<dc:subject xml:lang="fr">Cuivre</dc:subject>
<dc:subject xml:lang="fr">Bore</dc:subject>
<dc:subject xml:lang="fr">Fluor</dc:subject>
<dc:subject xml:lang="fr">Régiosélectivité</dc:subject>
<dc:subject xml:lang="fr">Couplage croisé</dc:subject>
<dc:subject xml:lang="fr">Catalyse</dc:subject>
<dc:subject xml:lang="en">Hydrometallation</dc:subject>
<dc:subject xml:lang="en">Alkynes</dc:subject>
<dc:subject xml:lang="en">Copper</dc:subject>
<dc:subject xml:lang="en">Boron</dc:subject>
<dc:subject xml:lang="en">Fluorine</dc:subject>
<dc:subject xml:lang="en">Regioselectivity</dc:subject>
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<tef:elementdEntree autoriteExterne="120294354" autoriteSource="Sudoc">Réactions chimiques régiosélectives</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Cette thèse porte sur le développement de nouvelles méthodes de synthèses et de synthons fluorés, utilisant la catalyse par des métaux de transition. Dans un premier temps, une stratégie de synthèse régiodivergente de borylation d’alcynes trifluorométhylés a été étudiée. Cette stratégie, basée sur la catalyse au cuivre(I), a permis l’accès sélectif à deux isomères α,Z ou β,Z. Les motifs vinylboranes trifluorométhylés ainsi obtenus ont pu être engagés dans des réaction de couplages croisés de type Suzuki-Miyaura avec différents partenaires aromatiques, hétéroaromatiques ou vinyliques. La différence de réactivité de ces deux régioisomères a été étudiée et utilisée dans des couplages croisés discriminants. Cette réactivité particulière a été mise en valeur avec des substrats diborylés, puis par le developpement d’une méthode d’arylation régiosélective. En parallèle, des réactions d’hydrométallations d’alcynes pentafluorosulfanylés catalysées par des métaux de transition, permettant l’introduction de métaux (Sn) et metalloïdes (Si, Ge, B) ont été décrites. La fonctionnalisation de ces substrats a été étudiée et des résultats préliminaires sont rapportés.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This thesis focuses on the development of new methods of synthesis of fluorinated synthons, using catalysis by transition metals. First, a regiodivergent synthesis strategy for the borylation of trifluoromethylated alkynes was studied. This strategy, based on copper(I) catalysis, allowed selective access to the α,Z or β,Z isomers. The trifluoromethylated vinylborane units thus obtained could be engaged in cross-coupling reactions of the Suzuki-Miyaura type with different aromatic, heteroaromatic or vinyl partners. The difference in reactivity of these two regioisomers has been studied and used in discriminative cross-couplings. This particular reactivity was highlighted with diborylated substrates, then by the development of a regioselective arylation method. In parallel, hydrometallation reactions of pentafluorosulfanyl alkynes catalyzed by transition metals, allowing the introduction of metals (Sn) and metalloids (Si, Ge, B) have been described. The functionalization of these substrates has been studied and preliminary results are reported.</dcterms:abstract>
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