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Synthèse, propriétés complexantes et activités biologiques de nouveaux α-aminophosphonates et α-hydroxyphosphonates

Synthèse, propriétés complexantes et activités biologiques de nouveaux α-aminophosphonates et α-hydroxyphosphonates

          
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About the Book

Thèse de Doctorat de l'année 2018 dans le domaine Chimie - Chimie Organique, Université de Tunis El Manar (Faculté des Sciences Mathématiques, Physiques et Naturelles de Tunis), langue: Français, résumé Depuis quelques années, nous nous sommes intéressés à la synthèse de nouveaux composés phosphorés à partir d'aldéhydes β-chloro-α,β-insaturés. Dans ce travail, nous avons rapporté la synthèse de nouveaux α-aminophosphonates fluoroalkylés, α-hydroxyphosphonates et α-acetoxyphosphonates en utilisant les mêmes aldéhydes. Nous avons décrit aussi les propriétés complexantes des α-hydroxyphosphonates vis-à-vis de l`étain(IV) ainsi que l`activité biologique de quelques α-amino- et α-hydroxyphosphonates. Les résultats obtenus ont été présentés en quatre chapitres: Dans le premier chapitre, nous avons préparé les aldéhydes β-chloro-α,β-insaturés en utilisant la réaction de Vilsmeier-Haack. Ces aldéhydes sont obtenus sous forme de deux stéréoisomères Z et E. Une étude par RMN nous a permis d'identifier les composés obtenus et de déterminer les proportions relatives aux deux isomères Z et E pour chaque composé. Nous avons aussi montré que la stéréochimie de ces aldéhydes dépend sensiblement du substituant en position α. Nous avons synthétisé aussi des bis(polyfluoroalkyl)phosphites dont la caractérisation a été entièrement réalisé par RMN multinucléaire (1H, 13C, 19F et 31P). Le deuxième chapitre a été consacré à l'optimisation de la synthèse en un one pot de nouveaux α-aminophosphonates en utilisant la réaction de Kabachnik-Fields. Nous avons montré que la réaction de bis(polyfluoroalkyl)phosphite avec les aldéhydes β-chloro-α,β-insaturés et l'aniline peut être réalisée en présence de SnCl4 comme catalyseur et qu'elle conduit aux α-aminophosphonates correspondants avec des rendements généralement meilleurs que ceux obtenus avec d'autre catalyseurs. La synthèse de nouveaux α-hydroxyphosphonates et α-acetoxyphosphonates à partir des aldéhydes β-chloro-α,β-insaturés a fa


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Product Details
  • ISBN-13: 9783668890350
  • Publisher: Bod Third Party Titles
  • Publisher Imprint: Grin Verlag
  • Height: 210 mm
  • No of Pages: 152
  • Spine Width: 9 mm
  • Width: 148 mm
  • ISBN-10: 3668890358
  • Publisher Date: 30 Jan 2019
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 208 gr


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