Search Results - "Meddour, Abdelkrim"

Enantioselective Intramolecular Hydroamination Catalyzed by Lanthanide Ate Complexes Coordinated by N-Substituted (R)-1,1‘-Binaphthyl-2,2‘-diamido Ligands by Riegert, David, Collin, Jacqueline, Meddour, Abdelkrim, Schulz, Emmanuelle, Trifonov, Alexander

“…Ytterbium and lutetium ionic complexes derived from enantiopure substituted (R)-binaphthylamine ligands, of the general formula [Li(THF) n…”
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2H and 13C NMR‐Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

“…In this work, the practical/analytical potential of an L‐valine‐derived polyacetylene (PLA) lyotropic liquid crystal (LLC) is examined to spectrally…”
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Samarium Iodobinaphtholate: An Efficient Catalyst for Enantioselective Aza-Michael Additions of O-Benzylhydroxylamine to N-Alkenoyloxazolidinones by Didier, Dorian, Meddour, Abdelkrim, Bezzenine-Lafollée, Sophie, Collin, Jacqueline

“…Samarium diiodide is an efficient catalyst for the aza‐Michael addition of O‐benzylhydroxylamine to α,β‐unsaturated N‐acyloxazolidinones leading to mixtures of…”
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Enantiodivergence in alkylation of 1-(6-methoxynaphth-2-yl)ethyl acetate by potassium dimethyl malonate catalyzed by chiral palladium-DUPHOS complex by Assié, Martine, Meddour, Abdelkrim, Fiaud, Jean-Claude, Legros, Jean-Yves

“…Alkylation of racemic 1-(6-methoxynaphth-2-yl)ethyl acetate by potassium dimethyl malonate catalyzed by a chiral palladium-DUPHOS complex afforded the…”
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Enantioselective Intramolecular Hydroamination of Secondary Amines Catalyzed by Easily Accessible Ate and Neutral Rare-Earth Complexes by Queffelec, Clémence, Boeda, Fabien, Pouilhès, Annie, Meddour, Abdelkrim, Kouklovsky, Cyrille, Hannedouche, Jérôme, Collin, Jacqueline, Schulz, Emmanuelle

“…The magnificent neutral: Secondary amines are cyclized into the corresponding scalemic pyrrolidines and piperidines with in situ‐prepared chiral alkylamido ate…”
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On the Elucidation of the Mechanism of Vinca Alkaloid Fluorination in Superacidic Medium by Giovanelli, Emerson, Leroux, Sébastien, Moisan, Lionel, Carreyre, Hélène, Thuéry, Pierre, Buisson, David-Alexandre, Meddour, Abdelkrim, Coustard, Jean-Marie, Thibaudeau, Sébastien, Rousseau, Bernard, Nicolas, Marc, Hellier, Paul, Doris, Eric

“…Detailed investigations on one of the key steps of the superacidic fluorination of Vinca alkaloids that is the origin of C20′ activation are reported. While…”
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2H QUOSY 2D‐NMR Experiments in Weakly Aligning Systems: From the Conventional to the Ultrafast Approach by Gouilleux, Boris, Meddour, Abdelkrim, Lesot, Philippe

“…We describe three anisotropic ultrafast (UF) QUadrupolar Ordered SpectroscopY (QUOSY) 2D‐NMR experiments (referred to as ADUF 2D NMR spectroscopy) designed for…”
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2 H QUOSY 2D‐NMR Experiments in Weakly Aligning Systems: From the Conventional to the Ultrafast Approach by Gouilleux, Boris, Meddour, Abdelkrim, Lesot, Philippe

“…Abstract We describe three anisotropic ultrafast (UF) QUadrupolar Ordered SpectroscopY (QUOSY) 2D‐NMR experiments (referred to as ADUF 2D NMR spectroscopy)…”
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2H QUOSY 2D-NMR Experiments in Weakly Aligning Systems: From the Conventional to the UF Approach by Gouilleux, Boris, Meddour, Abdelkrim, Lesot, Philippe

“…We describe three anisotropic ultrafast (UF) QUOSY 2D-NMR experiments (referred to as ADUF 2D NMR spectroscopy) designed for recording the 2H homonuclear 2D…”
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Multinuclear NMR in polypeptide liquid crystals: Three fertile decades of methodological developments and analytical challenges by Lesot, Philippe, Aroulanda, Christie, Berdagué, Philippe, Meddour, Abdelkrim, Merlet, Denis, Farjon, Jonathan, Giraud, Nicolas, Lafon, Olivier

“…[Display omitted] •Progress of NMR in polypeptide-based media during three decades is reviewed.•Anisotropic NMR interactions (RCSA, RDC, RQC) depend on…”
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Crystal Structures of μ2-Fluoro- and μ2-Salicylaldoximato-Bridged μ3-Oxo-tris(dimethyltin(IV)) Bis(salicylaldoximate) by Mercier, Frédéric A. G, Meddour, Abdelkrim, Gielen, Marcel, Biesemans, Monique, Willem, Rudolph, Tiekink, Edward R. T

“…Crystallographic data for [(Me2Sn)2(Me2SnO)(Nu)(HONZO)(ONZO)] where HONZOH is ortho-HONCH−C6H4−OH, salicylaldoxime, have been obtained for Nu = ONZOH (2) and…”
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Synthesis and Solution State Characterization by Gradient-Enhanced 2D Multinuclear NMR Spectroscopy of a Fluorine-Bridged Dimethyltin(IV) Salicylaldoximate Derivative by Meddour, Abdelkrim, Mercier, Frédéric, Martins, José C, Gielen, Marcel, Biesemans, Monique, Willem, Rudolph

“…The reaction of [(Me2Sn)2(Me2SnO)(ONZOH)(HONZO)(ONZO)] (HONZOH = o-HONCHC6H4OH, salicylaldoxime) with ammonium fluoride yields a fluorotris(dimethyltin)…”
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Front Cover: 2H and 13C NMR‐Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists (ChemPlusChem 2/2019) by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

“…The front cover shows the L‐valine‐derived polyacetylene (PLA) lyotropic liquid crystal (LLC) can be used in 2H and 13C NMR experiments to discriminate…”
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Front Cover: 2 H and 13 C NMR‐Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists (ChemPlusChem 2/2019) by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

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2H and 13C NMR‐Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

“…Invited for this month's cover are the collaborating groups of Dr. Philippe Lesot (DR CNRS) at Université Paris‐Sud/Université Paris‐Saclay, France, and…”
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2 H and 13 C NMR-Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

“…Invited for this month's cover are the collaborating groups of Dr. Philippe Lesot (DR CNRS) at Université Paris-Sud/Université Paris-Saclay, France, and…”
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2 H and 13 C NMR-Based Enantiodetection Using Polyacetylene versus Polypeptide Aligning Media: Versatile and Complementary Tools for Chemists by Lesot, Philippe, Berdagué, Philippe, Meddour, Abdelkrim, Kreiter, Alexander, Noll, Markus, Reggelin, Michael

“…In this work, the practical/analytical potential of an L-valine-derived polyacetylene (PLA) lyotropic liquid crystal (LLC) is examined to spectrally…”
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The use of exchangeable nuclei to observe enantiomers through deuterium NMR in chiral liquid crystalline solvents by Palomino, Martina, Khudr, Hussein, Courtieu, Jacques, Merlet, Denis, Meddour, Abdelkrim

“…It is demonstrated that 2H NMR in chiral liquid crystalline solvents can be used to measure enantiomeric excesses using exchangeable deuterons in alcohols…”
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X-ray Diffraction and 2D Gradient-Assisted 1H−119Sn HMQC NMR Studies of Structures Obtained from Nucleophilic Substitutions on Dimethyltin(IV) Salicylaldoximates by Willem, Rudolph, Bouhdid, Abdeslam, Meddour, Abdelkrim, Camacho-Camacho, Carlos, Mercier, Frédéric, Gielen, Marcel, Biesemans, Monique, Ribot, François, Sanchez, Clément, Tiekink, Edward R. T

“…The reactivity of the trinuclear tin cluster [(Me2Sn)2(Me2SnO)(OCH3)(HONZO)(ONZO)] (3a; HONZOH = o-HONCH-C6H4-OH, salicylaldoxime) toward proton-donating…”
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Enzymatic Fluorination in Streptomyces cattleya Takes Place with an Inversion of Configuration Consistent with an SN2 Reaction Mechanism by Cadicamo, Cosimo D, Courtieu, Jacques, Deng, Hai, Meddour, Abdelkrim, O'Hagan, David

“…The stereochemical course of the recently isolated fluorination enzyme from Streptomyces cattleya has been evaluated. The enzyme mediates a reaction between…”
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