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Showing 1 to 11 of 11 for “"Dynamic kinetic resolution"”.

  1. ASYMMETRIC ORGANOCATALYTIC HENRY REACTION OF β–SUBSTITUTED α-KETO ESTERS VIA DYNAMIC KINETIC RESOLUTION

    LIU GUANNAN2012

    … alkaloid derived bifunctional catalyst via dynamic kinetic resolution. Chapter 1 presents a brief historical background and development of asymmetric catalysis. Particularly, the asymmetric organocatalysis is introduced in detail. Then the historical background and development of dynamic …

    nus Repository record

  2. Synthesis of acetogenin analogues. Asymmetric transfer hydrogenation coupled with dynamic kinetic resolution of α-amido-β-keto esters

    Villo, Piret2013

    tartu

  3. Prozessentwicklung für die kontinuierliche dynamisch kinetische Racematspaltung

    Roosen, ChristophPublikationsserver der RWTH Aachen University2010

    A dynamic kinetic resolution is an interesting and reasonable extension for a simple kinetic resolution. Especially for the connection of an enzymatic catalysed kinetic resolution and a chemical catalysed racemisation very good results are known from literature. Common compatibility problems …

    aachen Repository record

  4. Asymmetric nucleophilic catalysis with planar-chiral DMAP derivatives and chiral phosphines : synthetic and mechanistic studies

    Lee, Sarah YunmiMassachusetts Institute of Technology2014

    … of the first non-enzymatic method for the dynamic kinetic resolution of secondary alcohols via enantioselective acylation, with acetyl isopropyl carbonate, through the use of a planar-chiral DMAP derivative (an acylation catalyst) in combination with a ruthenium complex (an …

    mit Repository record

  5. Copper-catalyzed conjugate reduction

    Jurkauskas, Valdas, 1966-Massachusetts Institute of Technology2004

    … to excellent yields (42-91%). Chapter 2. Kinetic resolution, with good selectivity factors (25-52), was achieved by conjugate reduction with catalytic CuCl/NaOt-Bu/(S)-p-tol-BINAP and stoichiometric quantities of PMHS. When stoichiometric amounts of NaOt-Bu and t-BuOH were included in the …

    mit Repository record

  6. Part I. Anionic Acyl Transfer Catalysis;Part II. Enantioselective alcoholysis of Acyl Donors;Part III. Enantioselective N-acylation

    Yang, Xing2013

    … which may be useful, e.g., for catalytic kinetic resolution of chiral amines.</p><p>From 2003 to 2009, our group developed four generations of amidine-based enantioselective acyl transfer catalysts(ABCs) and applied them successfully to the kinetic resolution of chiral alcohols. Compared …

    wustl Repository record

  7. Optimisation of chemoenzymatic processes in asymmetric synthesis

    Deasy, Rebecca E.University College Cork2012

    … enantio- and chemoselectivities enabling the resolution of organic substrates with superb efficiency and selectivity. In this study three biocatalytic applications in enantioselective synthesis were explored and perhaps the most significant outcome of this work is the excellent …

    cork Repository record

  8. Efficient & Novel Approaches to Relay Chirality in the Synthesis of Planar Chiral Metallocenes

    Amin, JahangirUniversity of East Anglia2010

    Abstract Intermolecular and intramolecular dynamic kinetic resolution were detected for organocobalt complexed diynes prepared from the complexation of an alkyne to dicobalt hexacarbonyl, Co2(CO)6 and subsequent manipulation of the carbocationic charge generated at the carbon α– to the alkyne …

    east-anglia Repository record

  9. Acqua: solvente elettivo in Organocatalisi e Biocatalisi

    Emer, Enrico <1979>Alma Mater Studiorum - Università di Bologna2009

    … induce the stereocentre racemization, allows the dynamic-kinetic resolution (DKR) to give the enantiopure alcohol. By analyzing the different reaction parameters, especially the pH and the amount of enzyme, and adding a small percentage of organic solvent, it was possible to control all the …

    bologna Repository record

  10. Development of enzyme-catalysed resolution, desymmetrisation and cascade processes. Use of lipasas, alcohol dehydrogenases and transaminases in stereoslective synthesis

    Mourelle Insua, Ángela2019

    … -Alkyl--Amino Amides by Transaminase-Mediated Dynamic Kinetic Resolutions” (ID del manuscrito: CY-ART-05-2019-001004). En el Bloque II (Capítulos 4-6) se han empleado alcohol deshidrogenasas como catalizadores en procesos de resolución cinética dinámica y desimetrización. Además, se ha llevado …

    oviedo Repository record

  11. Aplicación de flavoenzimas en síntesis orgánica

    Rioz Martínez, AnaUniversidad de Oviedo2012

    … of Chiral 3-Alkyl-3,4-Dihydroisocoumarins by Dynamic Kinetic Resolutions Catalyzed by a Baeyer-Villiger Monooxygenase¿ Rioz-Martínez, A.; de Gonzalo, G.; Torres Pazmiño, D. E.; Fraaije, M. W.; Gotor, V. J. Org. Chem. 2010, 75, 2073-2076. En el Capítulo 2 se desarrolla un sistema que permite la …

    oviedo Repository record