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<dc:title xml:lang="en">Fluroalkylation as an innovative approach to construct fluorinated heterocycles</dc:title>
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<dc:subject xml:lang="fr">Difluorométhylène</dc:subject>
<dc:subject xml:lang="fr">Hétérocycles</dc:subject>
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<dc:subject xml:lang="en">Fluorine chemistry</dc:subject>
<dc:subject xml:lang="en">Polyfluoroalkylation</dc:subject>
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<dcterms:abstract xml:lang="fr">L’introduction d’un atome de fluor ou d’un groupement fluoré dans une molécule permet de moduler ses propriétés physico-chimiques et biologiques. Ces dernières décennies, le nombre de stratégies de synthèse permettant d’accéder à des molécules fluorées se sont démultipliées, ce qui a conduit à une forte augmentation du nombre de principes actifs fluorés. Ces derniers sont composés à 70% de groupements fluorés basés sur l'atome de fluor -F ou sur le groupement trifluorométhylé -CF3. L’un des enjeux cruciaux de ces prochaines années est le développement de nouvelles voies d’accès à des motifs fluorés émergents afin de permettre la découverte de composés agrochimiques écologiquement viables. En collaboration avec Bayer CropScience, nous avons décidé d’étudier la synthèse d’hétérocycles polyfluoroalkylés. Pour cela, nous avons développé la polyfluoroalkylation nucléophile de pyridines par déprotonation du groupement difluorométhyle. Par la suite, nous avons étudié la polyfluoroalkylation électrophile de divers hétérocycles à l’aide de fluorosulfonates. Ces intermédiaires ont été obtenu in situ par réaction d’alcools fluorés et de fluorure de sulfuryle.</dcterms:abstract>
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