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Carbènes N-Hétérocycliques : Des catalyseurs en chimie des silicones. Carbodiphosphoranes cycliques : Synthèse, coordination et réactivité

Abstract : In a first chapter, we are interested in the use of N-Heterocyclic Carbenes like nucleophilic organic catalysts for ring opening polymerization of octamethylcyclosiloxane and for reactions of polycondensation.
In a second chapter, we carry out a bibliographical review on coumpounds presenting two cumulated ylides functions : carbodiphosphoranes.
In a third chapter, we present the synthesis and the coordination of new cyclic carbodiphosphoranes. They are recognized to be strong -donor ligands for transition metals.
In a fourth chapter, we study the thermolysis of one of these compounds which leads by rearrangement to the formation of a 1.2 5-azaphosphète. A theoretical stydy highlights an inter conversion between carbodiphosphoranes and disphosphinocarbenes.
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Submitted on : Tuesday, December 11, 2007 - 11:22:31 AM
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Sébastien Marrot. Carbènes N-Hétérocycliques : Des catalyseurs en chimie des silicones. Carbodiphosphoranes cycliques : Synthèse, coordination et réactivité. Autre. Université Paul Sabatier - Toulouse III, 2007. Français. ⟨tel-00195591⟩

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