Search Results - "Guillen, Frédéric"

Chiral ionic liquids, a renewal for the chemistry of chiral solvents? Design, synthesis and applications for chiral recognition and asymmetric synthesis by Baudequin, Christine, Brégeon, Delphine, Levillain, Jocelyne, Guillen, Frédéric, Plaquevent, Jean-Christophe, Gaumont, Annie-Claude

“…Chiral ionic solvents were almost unexplored before the last five years. This field which is of increasing importance could constitute a renewal for the…”
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Enantioselective copper-catalyzed conjugate addition using chiral diaminocarbene ligands by Guillen, Frédéric, Winn, Caroline L., Alexakis, Alexandre

“…Chiral diaminocarbene ligands, generated by in-situ deprotonation of the corresponding chiral imidazolinium salts, are shown to be efficient ligands in the…”
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Ionic Liquids: New Targets and Media for α-Amino Acid and Peptide Chemistry by Plaquevent, Jean-Christophe, Levillain, Jocelyne, Guillen, Frédéric, Malhiac, Catherine, Gaumont, Annie-Claude

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Ultrasound-Enhanced Deracemization: Toward the Existence of Agonist Effects in the Interpretation of Spontaneous Symmetry Breaking by Rougeot, Céline, Guillen, Frédéric, Plaquevent, Jean-Christophe, Coquerel, Gérard

“…Both isothermal attrition-enhanced and ultrasound-enhanced deracemizations of an organic compound were compared in productivities and in the evolution of the…”
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Histidine-based salt as an ionic tag for proline: application in enantioselective cross aldol reaction in ionic liquids by Kui, Tony, Guillen, Frédéric

“…A new ionic-liquid supported aminocatalyst was synthesized by the peptide coupling of proline on a ring-dialkylated histidine salt serving as ionic support…”
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Towards a Robust and Reliable Method for the Reduction of Functionalized Sulfoxides by Ternois, James, Guillen, Frédéric, Piacenza, Guy, Rose, Sébastien, Plaquevent, Jean-Christophe, Coquerel, Gérard

“…Several functionalized sulfoxides in the modafinil series, which bear another reducible function, were chemoselectively reduced to thioethers using the KI/AcCl…”
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Ionic liquids and cyclodextrin inclusion complexes: limitation of the affinity capillary electrophoresis technique by Mofaddel, Nadine, Fourmentin, Sophie, Guillen, Fréderic, Landy, David, Gouhier, Géraldine

“…The state of the art of inclusion complex formation between cyclodextrins and ionic liquids is reported. Mechanisms, stoichiometries, and binding constants are…”
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New ternary water-soluble support from self-assembly of β-cyclodextrin-ionic liquid and an anionic polymer for a dialysis device by Bouyahya, Asmaa, Sembo-Backonly, Berthe-Sandra, Favrelle-Huret, Audrey, Balieu, Sébastien, Guillen, Frédéric, Mesnage, Valérie, Karakasyan-Dia, Carole, Lahcini, Mohammed, Le Cerf, Didier, Gouhier, Géraldine

“…We developed a new hybrid material resulting from an innovative supramolecular tripartite association between an ionic liquid covalently immobilized on primary…”
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Structure–Binding Effects: Comparative Binding of 2‑Anilino-6-naphthalenesulfonate by a Series of Alkyl- and Hydroxyalkyl-Substituted β‑Cyclodextrins by Favrelle, Audrey, Gouhier, Géraldine, Guillen, Frédéric, Martin, Claudette, Mofaddel, Nadine, Petit, Samuel, Mundy, Kara M, Pitre, Spencer P, Wagner, Brian D

“…Cyclodextrins (CDs) are the most widely used organic hosts for the inclusion of guest molecules. CDs can be readily modified through substitutions of the…”
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2′-Deoxyribo-oligonucleotides duplexes and G-quadruplexes structures and thermal stability in 1‑butyl‑1-methylpiperidinium and 1-octyl-3-methylimidazolium bromide ionic liquid solutions by Jales, Raquel Dias, Payrastre, Corinne, Gerland, Béatrice, Guillen, Frédéric, Escudier, Jean-Marc

“…•DNA duplex structure was not affected in omim or bmPip ILs.•G-quad structure was not affected in omim or bmPip ILs.•DNA duplex stability decreased while omim…”
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The use of ionic liquids as an organocatalyst for controlled ring-opening polymerization of ϵ-caprolactone by Kaoukabi, Asmae, Guillen, Frédéric, Qayouh, Hicham, Bouyahya, Asmaa, Balieu, Sébastien, Belachemi, Larbi, Gouhier, Géraldine, Lahcini, Mohammed

“…•Controlled ring-opening polymerization in bulk catalyzed by ionic liquid.•Living polymerization with good conversions and molecular weight…”
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Scalable synthesis of ionic liquids: comparison of performances of microstructured and stirred batch reactors by Iken, Hicham, Guillen, Frédéric, Chaumat, Hélène, Mazières, Marie-Rose, Plaquevent, Jean-Christophe, Tzedakis, Théodore

“…A range of alkylpyridinium bromide ionic liquids have been synthesized in a stirred reactor at multigram scale and characterized by physical methods…”
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First Examples of α-(1→4)-Glycosylation Reactions on Ionic Liquid Supports by Pépin, Matthieu, Hubert-Roux, Marie, Martin, Claudette, Guillen, Fréderic, Lange, Catherine, Gouhier, Géraldine

“…We have developed the first α‐(1→4)‐glycosylation reactions on ionic liquid supports. The purification steps involve simple liquid/liquid extractions. The…”
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Asymmetric synthesis of modafinil and its derivatives by enantioselective oxidation of thioethers: comparison of various methods including synthesis in ionic liquids by Ternois, James, Guillen, Frédéric, Plaquevent, Jean-Christophe, Coquerel, Gérard

“…The oxidation of 2-(benzhydrylthio)acetic acid and its derivatives was performed with various catalytic and stoichiometric enantioselective reagents, the best…”
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Design and Scalable Synthesis of New Chiral Selectors. Part 2: Chiral Ionic Liquids Derived from Diaminocyclohexane and Histidine by Zgonnik, Viacheslav, Gonella, Silvia, Mazières, Marie-Rose, Guillen, Frédéric, Coquerel, Gérard, Saffon, Nathalie, Plaquevent, Jean-Christophe

“…We disclose the conception and synthesis of new chiral selectors useful for enantioselective liquid–liquid extraction processes (ELLE). We report synthetic…”
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Attrition-enhanced preferential crystallization combined with racemization leading to redissolution of the antipode nuclei by Levilain, Guillaume, Rougeot, Céline, Guillen, Frédéric, Plaquevent, Jean-Christophe, Coquerel, Gérard

“…Preferential crystallization is an effective and cheap resolution method which is limited by the nucleation of the antipode, even in the case of in situ…”
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Synthesis in ionic liquids only: access to α-oxo-γ-thio-esters via Mukaiyama coupling by Jebri, Khouloud, Mazières, Marie-Rose, Ballereau, Stéphanie, Ben Ayed, Taïcir, Plaquevent, Jean-Christophe, Baltas, Michel, Guillen, Frédéric

“…Ionic liquids are solvents general enough to conduct a multi-step process in organic synthesis. We show that both the preparation of starting materials…”
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Design and scalable synthesis of new chiral selectors. Part 1: Synthesis and characterization of a new constrained cyclopeptide from unnatural bulky amino acids by Ferron, Laurent, Guillen, Frédéric, Coste, Servane, Coquerel, Gérard, Cardinaël, Pascal, Schwartz, Joël, Paris, Jean-Marc, Plaquevent, Jean-Christophe

“…We describe the conception, synthesis, and characterization of a novel cyclopeptide designed for chiral recognition. The asymmetric units are built from an…”
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Study of rapeseed oil gelation induced by commercial monoglycerides using a chemometric approach by Monié, Aurélie, Franceschi, Sophie, Balayssac, Stéphane, Malet-Martino, Myriam, Delample, Mathieu, Perez, Emile, Garrigues, Jean-Christophe

“…•The classification of the commercial oleogelators was carried out by a QSPR study.•The QSPR study identified the key analytical parameters to model…”
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Synthesis of phosphoantigens: Scalable accesses to enantiomers of BrHPP and studies on N-HDMAPP synthesis by Brégeon, Delphine, Ferron, Laurent, Chrétien, Antony, Guillen, Frédéric, Zgonnik, Viacheslav, Rivaud, Marion, Mazières, Marie-Rose, Coquerel, Gérard, Belmant, Christian, Plaquevent, Jean-Christophe

“…Phosphoantigens enable the access to a new anti-tumoral and anti-infectious therapeutic pathway, based on innate immunity through the selective activation of…”
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