Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Jeff Espinas"'
Publikováno v:
Journal of Organometallic Chemistry. 784:103-108
By exchange of ligands, Wilkinson complex RhCl(PPh 3 ) 3 are immobilized on p -aminobenzoate/TiO 2 with different organic loading (6, 11 and 16%). This new hybrid material exhibit a linear correlation between the ligand content of the starting TiO 2
Autor:
Nassima Riache, Jean-Marie Basset, Alexandre Dery, Manoja K. Samantaray, Jeff Espinas, Emmanuel Callens, Raju Dey
Publikováno v:
Catalysis Science & Technology. 5:280-285
Metathesis of linear alkanes catalyzed by the well-defined precursor (Si–O–WMe5) affords a wide distribution of linear alkanes from methane up to triacontane. Olefin metathesis using the same catalyst and under the same reaction conditions gives
Autor:
Nicolas Merle, Laurent Delevoye, Frédéric Lefebvre, Jeff Espinas, Jérémie D. A. Pelletier, Régis M. Gauvin, Nicolas Popoff, Jean Thivolle-Cazat, Mostafa Taoufik, Kai C. Szeto, Aimery De Mallmann
Publikováno v:
Catalysis Today. 235:41-48
We have developed a new hybrid material, featuring single-site phenolic functions on a silica surface. This new material was used for the grafting, by surface organometallic chemistry, of tungsten perhydrocarbyl and molybdenum bispyrrolide alkylidene
Autor:
Jean-Marie Basset, Christine Lucas, Mostafa Taoufik, Aimery De Mallmann, Jean Thivolle-Cazat, Erwan Le Roux, Jérémie D. A. Pelletier, Kai C. Szeto, Nicolas Merle, Jeff Espinas
Publikováno v:
Microporous and Mesoporous Materials. 188:77-85
The calixarene [[4H]-(OH) 3 (H)] was used as a linker between a mesoporous silica SBA-15 LP (large pore) modified with Al( i Bu) 3 ·(Et 2 O) and organometallic complexes Zr( ∗ CH 2 Ph) 4 or W( C t Bu(CH 2 t Bu) 3 ) to avoid steric and electronic i
Autor:
Laurent Maron, Benoît Macqueron, Christophe Boisson, Mostafa Taoufik, Kai C. Szeto, Iker del Rosal, Nicolas Popoff, Olivier Boyron, Régis M. Gauvin, Aimery De Mallmann, Jeff Espinas, Jérémie D. A. Pelletier
Publikováno v:
Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2013, 19 (3), pp.964-973. ⟨10.1002/chem.201202737⟩
Chemistry-A European Journal, 2013, 19 (3), pp.964-973. ⟨10.1002/chem.201202737⟩
Chemistry-A European Journal, Wiley-VCH Verlag, 2013, 19 (3), pp.964-973. ⟨10.1002/chem.201202737⟩
Chemistry-A European Journal, 2013, 19 (3), pp.964-973. ⟨10.1002/chem.201202737⟩
Homoleptic benzyl derivatives of titanium and zirconium have been grafted onto silica that was dehydroxylated at 200 and 700 °C, thereby affording bi-grafted and mono-grafted single-site species, respectively, as shown by a combination of experiment
Publikováno v:
Organometallics
Organometallics, American Chemical Society, 2012, 31 (21), pp.7610-7617. ⟨10.1021/om300918v⟩
Organometallics, American Chemical Society, 2012, 31 (21), pp.7610-7617. ⟨10.1021/om300918v⟩
International audience; A well-defined silica-based material with a homogeneous nanolayer presenting identical pairs of vicinal silanols has been prepared by reaction of the surface organometallic species[ SiOZr(CH2CMe3)(3)], obtained on a silica deh
Autor:
Erwan Le Roux, Nicolas Popoff, Régis M. Gauvin, Eric Gouré, Olivier Boyron, Mostafa Taoufik, Jean-Marie Basset, Jeff Espinas, Aimery De Mallmann
Publikováno v:
Macromolecular Rapid Communications
Macromolecular Rapid Communications, Wiley-VCH Verlag, 2011, 32 (23), pp.1921-1924. ⟨10.1002/marc.201100477⟩
Macromolecular Rapid Communications, 2011, 32 (23), pp.1921-1924. ⟨10.1002/marc.201100477⟩
Macromolecular Rapid Communications, Wiley-VCH Verlag, 2011, 32 (23), pp.1921-1924. ⟨10.1002/marc.201100477⟩
Macromolecular Rapid Communications, 2011, 32 (23), pp.1921-1924. ⟨10.1002/marc.201100477⟩
Silica-supported titanium(IV) chloride is readily reduced by Mashima and co-workers' reagent (1-methyl-3,6-bis(trimethylsilyl)-1,4-cyclohexadiene) to afford materials active in ethylene polymerisation without need of aluminum alkyl cocatalyst.
Autor:
Caroline Felix, Mostafa Taoufik, Christian Duchamp, Denis Bouchu, Joackim Bois, Ulrich Darbost, Jeff Espinas, Isabelle Bonnamour
Publikováno v:
The Journal of Organic Chemistry. 75:7550-7558
An efficient and selective method for the monofunctionalization of p-tert-butylcalix[4]arene is described. A mono-de-O-functionalization of disubstituted p-tert-butylcalix[4]arenes using titanium tetrachloride was developed to synthesize a series of
Autor:
Kai C. Szeto, Jeff Espinas, Laurent Delevoye, Nicolas Popoff, Jérémie D. A. Pelletier, Régis M. Gauvin, Mostafa Taoufik, Jean Thivolle-Cazat
Publikováno v:
ChemCatChem
ChemCatChem, Wiley, 2013, 5 (7), pp.1971-1977. ⟨10.1002/cctc.201200850⟩
ChemCatChem, 2013, 5 (7), pp.1971-1977. ⟨10.1002/cctc.201200850⟩
ChemCatChem, Wiley, 2013, 5 (7), pp.1971-1977. ⟨10.1002/cctc.201200850⟩
ChemCatChem, 2013, 5 (7), pp.1971-1977. ⟨10.1002/cctc.201200850⟩
A new material based on amorphous silica, and featuring a well-defined phenolic functionality was prepared in two simple steps by using commercially available, cheap reagents. Silica was first reacted with aluminum isobutyl etherate to yield an alumi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ae12be3217f02094c90878cf3f80883
https://hal.archives-ouvertes.fr/hal-02043020
https://hal.archives-ouvertes.fr/hal-02043020
Autor:
Isabelle Bonnamour, Jérémie D. A. Pelletier, Jean Thivolle-Cazat, Denis Bouchu, Ulrich Darbost, Natali Henriques, Erwan Jeanneau, Christian Duchamp, Christine Lucas, Jean-Marie Basset, Mostafa Taoufik, Henry Chermette, Kai C. Szeto, Jeff Espinas
Publikováno v:
Organometallics
Organometallics, American Chemical Society, 2011, 30 (13), pp.3512-3521. ⟨10.1021/om200140u⟩
Organometallics, American Chemical Society, 2011, 30 (13), pp.3512-3521. ⟨10.1021/om200140u⟩
International audience; The alkylation of (dichlorotantala)-p-tert-butylcalix[4]arenes 1 and 3 by two equivalents of NpMgCl (Np = neopentyl) affords the corresponding unreported (bisneopentyltantala)-p-tert-butylcalix[4]arenes 4 and S. These complexe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99a76b80406d2e02a61b0c69462ecbd7
https://hal.archives-ouvertes.fr/hal-00877430
https://hal.archives-ouvertes.fr/hal-00877430