Výsledky vyhledávání - "Christian Duchamp"

Self-assembly of achiral building blocks into chiral cyclophanes using non-directional interactions

Autor: Laurent Vial, Julien Leclaire, Florent PERRET, Ivan Huc, Pradeep Kumar Mandal, Elise Dumont, Olivier Cala, Nicolas Vanthuyne, Ana M Belenguer, Christian Duchamp, Titouan Chetot, Emeric Jeamet, Pierre-Thomas Skowron, Benjamin Ourri, Yuan Zhang

The diastereoselective assembly of achiral constituents through a single spontaneous process into complex covalent architectures bearing multiple stereogenic elements still remains a challenge for synthetic chemists. Here, we show that such an extrem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31dbcca0ffb242a8718930216d72822c
https://www.repository.cam.ac.uk/handle/1810/350710

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Synthesis of 5-substituted 2,3-dihydrobenzofurans in a one-pot oxidation/cyclization reaction

Autor: Fabien Baragona, Thierry Lomberget, Alessandra Montalbano, Natali Henriques, Christian Duchamp, Roland Barret, Patrizia Diana, Eugenio Lo Piccolo

Publikováno v: Tetrahedron. 67:8731-8739

Variously substituted 2,3-dihydrobenzofurans have been synthesized according to a sequential one-pot oxidation/cyclization procedure between para-aminophenol derivatives and an azadiene. Variously substituted 2,3-dihydrobenzofurans have been synthesi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d45a755f2367328258e02a75ec0c467a
https://doi.org/10.1016/j.tet.2011.09.020

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Easy and Selective Method for the Synthesis of Various Mono-O-functionalized Calix[4]arenes: De-O-functionalization Using TiCl4

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1755a3ca68397ad8a167fdc977c0706b
https://doi.org/10.1021/jo101319s

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Preparations of nano-particles, nano-composites and fibers of ZnO from an amide precursor: Photocatalytic decomposition of (CH3)2S2 in a continuous flow reactor

Autor: Christian Duchamp, Chantal Guillard, Liliane G. Hubert-Pfalzgraf, Gilles Ledoux, Mohamed Nawfal Ghazzal, Stéphane Daniele

Publikováno v: Materials Research Bulletin
Materials Research Bulletin, Elsevier, 2006, 41 (12), pp.2210-2218. ⟨10.1016/j.materresbull.2006.04.041⟩

High surface area hexagonal ZnO nano-particles were obtained at room temperature from hydrolysis of the amide derivative Zn[N(SiMe 3 ) 2 ] 2 . The same procedure applied on silica or cellulose substrates led to homogeneous crack-free hybrid materials

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::406068a207b70eb17f6db9ce43a158d9
https://doi.org/10.1016/j.materresbull.2006.04.041

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Synthesis, Conformations and Extraction Properties of New Chromogenic Calix[4]arene Amide Derivatives

Autor: Isabelle Dumazet-Bonnamour, Hatem Halouani, Roger Lamartine, Claude Bavoux, Christian Duchamp, Monique Perrin, Noëlle Ehlinger

Publikováno v: European Journal of Organic Chemistry. 2002:4202-4210

The synthesis of a new series of chromogenic calix[4]arene derivatives is described. p-Tetrakis(phenylazo)calix[4]arenes substituted with tertiary amide groups at the lower rim were obtained. The O-substitution of 25,26,27,28-tetrahydroxy-11,23-bis(p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dec08929d9e43db824f732754889cfef
https://doi.org/10.1002/1099-0690(200212)2002:24<4202::aid-ejoc4202>3.0.co

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ChemInform Abstract: Synthesis of 5-Substituted 2,3-Dihydrobenzofurans in a One-Pot Oxidation/Cyclization Reaction

Autor: Christian Duchamp, Natali Henriques, Patrizia Diana, Alessandra Montalbano, Roland Barret, Eugenio Lo Piccolo, Thierry Lomberget, Fabien Baragona

Publikováno v: ChemInform. 43

The oxidation of N-protected p-aminophenol derivatives to quinone imides is combined with cycloaddition towards azadiene (II) in a one-pot reaction to give dihydrobenzofuran derivatives in moderate to good yields.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88a7c7dc938fa0d12e16692168cdf1bb
https://doi.org/10.1002/chin.201211081

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Synthesis of novel tantalacalixarene complexes: first example of intramolecular CH activation of monodepleted aromatic ring

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⟩

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

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Titanacalixarenes in hommogeneous catalysis : synthesis, conformation and catalytic activity in ethylene polymerisation

Autor: Jean Thivolle-Cazat, Erwan Jeanneau, Isabelle Bonnamour, Christian Duchamp, Ulrich Darbost, Jeff Espinas, Mostafa Taoufik, Jean-Pierre Broyer, Jean-Marie Basset, François Bayard, Olivier Boyron, Jeremie Pelletier

Publikováno v: European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2010, 2010 (9), pp.1349-1359. ⟨10.1002/ejic.200901185⟩
European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2010, pp.1349-1359. ⟨10.1002/ejic.200901185⟩

International audience; Variously substituted titanacalixarenes were synthesised and tested for their performance as catalysts in ethylene polymerisation: p-tert-butylcalix[4]arene was derivatised to afford distal diether p-tert-butylcalix[4]arenes L

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbbc154c869cba53bcd2e3e4879f12d8
https://hal.archives-ouvertes.fr/hal-01162664

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Photocatalytic degradation and mineralization of a malodorous compound (dimethyldisulfide) using a continuous flow reactor

Autor: Mohamed Nawfal Ghazzal, D. Baldassare, Chantal Guillard, Stéphane Daniele, Christian Duchamp

Publikováno v: Catalysis Today
Catalysis Today, Elsevier, 2007, 122, pp.160-167. ⟨10.1016/j.cattod.2007.01.059⟩

International audience; Dimethyldisulfide (DMDS) degradation and mineralization were carried out in a continuous flow reactor using TiO2-P25 or ZnO as photocatalysts. The efficiency of the disappearance and of the mineralization of the DMDS showed to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3a0dec912a5c11d45ee29ebb9e4b6c1
https://hal.archives-ouvertes.fr/hal-00180490

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Influence of L-type activated carbons on photocatalytic activity of TiO2 in 4-chlorophenol photodegradation

Autor: Corinne Ferronato, Christian Duchamp, Tulynan Cordero, Juan Matos, Jean-Marc Chovelon

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry
Journal of Photochemistry and Photobiology A: Chemistry, Elsevier, 2007, 191, pp.122-131. ⟨10.1016/j.jphotochem.2007.04.012⟩

International audience; The main objective of this work is to study the influence of inorganic compounds employed in the synthesis of L-type activated carbons on photocatalytic activity of TiO2 in 4-chlorophenol photodegradation. Different activated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b45fa1534ca65921fd0aea095ad2ede3
https://hal.archives-ouvertes.fr/hal-00179300

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