Results 241 to 250 of about 42,802 (288)
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Enantioselective cooperative catalysis
Organic & Biomolecular Chemistry, 2015This review focuses on enantioselective cooperative catalytic reactions, wherein two catalysts work simultaneously to form products which cannot be obtained by the use of a single catalyst alone, which have attracted considerable attention in recent years.
Suleman M, Inamdar +2 more
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Organocatalytic enantioselective desymmetrisation
Chem. Soc. Rev., 2016Organocatalytic enantioselective desymmetrisation of achiral or meso compounds is a powerful strategy for the construction of enantiomerically enriched complex molecules, often with multiple stereocentres and in high selectivities. Recent years have seen increasing use of organocatalysts in desymmetrisation methodology, in contrast to traditional metal-
A, Borissov +5 more
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Catalytic Enantioselective Oxaziridination
Journal of the American Chemical Society, 2011The first catalytic enantioselective synthesis of oxaziridines is presented. The oxidation of aryl and alkyl aldimines with m-CPBA under organocatalytic conditions using cinchona alkaloid-derived catalysts furnished optically active oxaziridines in good yields and high enantioselectivities (up to 94% ee).
Lykke, Lennart +2 more
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Enantioselective Radical Processes
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Mukund P, Sibi +2 more
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Enantioselective Halogenation Reactions
ChemInform, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Hasim Ibrahim, Antonio Togni
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Enantioselective Phosphine Organocatalysis
Synlett, 2009The broad potential synthetic usefulness of phosphine-promoted reactions has stimulated many recent investigations on enantioselective variants of known reactions of this family, as well as the search for new, specifically designed, chiral phosphorus catalysts.
Marinetti, A., Voituriez, A.
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“Cofactor”-Controlled Enantioselective Catalysis
Journal of the American Chemical Society, 2011We report an achiral bisphosphine rhodium complex equipped with a binding site for the recognition of chiral anion guests. Upon binding small chiral guests--cofactors--the rhodium complex becomes chiral and can thus be used for asymmetric catalysis. Screening of a library of cofactors revealed that the best cofactors lead to hydrogenation catalysts ...
Dydio, P. +4 more
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Organocatalytic Enantioselective Photoreactions
Angewandte Chemie International Edition, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
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Monooxygenases Catalyzed Enantioselective Sulfoxidations
Phosphorus, Sulfur, and Silicon and the Related Elements, 1994Abstract A study on the stereochemistry of the oxidation of sulfur by several monooxygenases using numerous organic sulfides as substrates is reported. In most cases the sulfoxidation reaction is highly enantioselective. The various factors that control the enantioselectivity have been examined.
S. Colonna, N. Gaggero
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Towards Enantioselective Nucleophilic Trifluoromethylation
Chemistry – A European Journal, 2005AbstractVarious trifluoroacetamides and trifluoromethanesulfinamides, derived from chiral silylated amino alcohols, have been synthesized with the goal of achieving enantioselective nucleophilic trifluoromethylation. The best results were obtained with (R)‐phenylglycinol derivatives, but the ee values did not exceed 30 %.
Solveig, Roussel +3 more
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