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Cadra S.,CEA Le Ripault | Velasquez E.,CEA Le Ripault | Moreau L.,CEA Le Ripault | Giorgi M.,Aix - Marseille University | And 2 more authors.
Tetrahedron Letters | Year: 2011

Inertial confinement fusion (ICF) experiments generate a demand of specific organometallic materials, especially titanium-doped porous polymers obtained from specific Ti-containing monomers. Two new polymerizable titanium(IV) complexes were synthesized. Their free radical co-polymerization affords several titanium-containing polymers, which were dried under supercritical conditions to afford organic aerogels. The chemical compositions of these materials were investigated by NMR, IR, and elemental analysis while their structure was characterized by MEB-EDS and by N2 adsorption/desorption isotherm measurements. © 2011 Elsevier Ltd. All rights reserved. Source


David-Quillot F.,CEA Le Ripault | Duchene A.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Catala J.-M.,French National Center for Scientific Research | Balland-Longeau A.,CEA Le Ripault | Thibonnet J.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry | Year: 2010

Fourteenth group oganometallic styrene derivatives were synthesised by nitroxide-mediated controlled radical polymerization using di-tert butyl nitroxide (A-T) as initiator. This is the first time that nitroxide-controlled radical polymerization has been successfully adapted for the synthesis of new polystyrenes bearing organometallic species with controlled molecular weights and narrow polydispersities. Monomer reactivity ratios were determined in controlled nitroxide-mediated radical copolymerization between styrene and substituted styrene. All experiments permitted the synthesis of new organometallic polymers that will be used for the development of a polymer capsule for Inertial Confinement Fusion Experiments. © 2010 Taylor & Francis Group, LLC. Source


Moreau L.,CEA Le Ripault | Balland-Longeau A.,CEA Le Ripault | Mazabraud P.,CEA Le Ripault | Duchene A.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Thibonnet J.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules
Chemical Communications | Year: 2010

The present study reports on the formation of supramolecular fibers from a novel cyclen-based ligand and metal salts. In particular, the fibers were shown to stabilize supramolecular porous materials of low density. It was also demonstrated that these fibers could be functionalized by radical polymer growth on their surface. Such new supramolecular fibers constitute a simple and tunable starting material for the synthesis of 1D core-shell objects. © The Royal Society of Chemistry 2010. Source


Lamande-Langle S.,CNRS Structure and Reactivity of Complex Molecular Systems | Abarbri M.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Thibonnet J.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Duchene A.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Parrain J.-L.,Aix - Marseille University
Chemical Communications | Year: 2010

Three-component reactions with 3,4-diiodoalk-2-enoic derivatives, primary amines, and terminal alkynes proceeded to give trisubstituted pyrroles in fair to good yields in the presence of palladium and copper catalysts under mild reaction conditions. © The Royal Society of Chemistry 2010. Source


Kizirian J.-C.,University of Barcelona | Kizirian J.-C.,Laboratoire Of Physicochimie Des Materiaux Et Des Biomolecules | Aiguabella N.,University of Barcelona | Pesquer A.,University of Barcelona | And 6 more authors.
Organic Letters | Year: 2010

Stoichiometric and catalytic intermolecular Pauson - Khand reactions (PKRs) of dissymmetric fluorinated alkynes were performed, affording regioselectively -fluorinated cyclopentenones. Ethyl 4,4,4-trifluorobutynoate was an excellent substrate; its reaction with norbornadiene gave the corresponding PKR adduct in good yield and complete regioselectivity. Conjugate addition of nitroalkanes or cyanide to this adduct is stereospecific and entails concomitant loss of a trifluoromethyl group. This reaction can be exploited to prepare cyclopentenones featuring quaternary centers. © 2010 American Chemical Society. Source

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