Search for dissertations about: "Racemic Resolution"

Showing result 1 - 5 of 26 swedish dissertations containing the words Racemic Resolution.

  1. 1. Lipase catalysed reactions of terpenoids : formation of hemiacetal esters : resolution of cryptone and its transformation to cadinenes

    University dissertation from Stockholm : KTH

    Author : Dan Isaksson; Fredrik Almqvist; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; terpenoid; lipase; resolution; hemiacetal; hemiacetal ester; enantioselective; synthesis; cryptone; cadinene; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : During attempted enzyme-catalysed resolution of sterically hindered secondary alcohols, hemiacetals and their esters were unexpectedly detected. Hemiacetal esters are reactive compounds that decompose to alcohol, aldehyde and acid under ordinary work-up conditions i.e. in contact with water, acid, or silica gel. READ MORE

  2. 2. Absolute Asymmetric Synthesis

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Anders Lennartson; Göteborgs universitet.; Gothenburg University.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; absolute asymmetric synthesis; enantioselective synthesis; chirality; optical resolution; spontaneous resolution; conglomerate; organozinc reagents; organometallic chemistry; coordination chemistry; supramolecular chemistry; intermolecular interactions; optical resolution; spontaneous resolution; organozinc reagents; conglomerate; organometallic chemistry; chirality; coordination chemistry; supramolecular chemistry; intermolecular interactions; enantioselective synthesis;

    Abstract : Absolute asymmetric synthesis is the synthesis of optically active products from achiral or racemic precursors only. This has generally been regarded as impossible and is relevant in the discussion of the origins of biomolecular homochirality. READ MORE

  3. 3. Molecular Imprinting Technology. Design and Recognition Properties of Antibody/Receptor Mimics

    University dissertation from Pure and Applied Biochemistry, Lund University

    Author : Olof Ramström; [1996]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Template Polymerisatio; Steroid; Receptor; Racemic Resolution; Polymer; Molecular Recognition; Molecular Imprinting; Enantiomeric Separation; de novo Design; Chromatography; Chiral Stationary Phase; Chiral Recognition; Biorecognition; Antibody; Biomimetic; Biochemistry; Metabolism; Biokemi; metabolism; Biotechnology; Bioteknik;

    Abstract : Molecular imprinting technology is derived from the concept of creating designed recognition sites in macromolecular matrices by means of template polymerisation. Molecularly imprinted polymers are able to mimic recognition in natural binding events, such as antibody-antigen and receptor-ligand interactions. READ MORE

  4. 4. On the separation of enantiomers by direct crystallization

    University dissertation from Stockholm : Kemiteknik

    Author : Veronica Profir; [2001]
    Keywords : optical resolution; direct crystallization; threonine; mandelic acid; racemic compound; nucleation of metastable conglomerate; in situ concentration measurements; IR spectroscopy; multivariate calibration.;

    Abstract : .... READ MORE

  5. 5. Enzyme- and Transition Metal-Catalyzed Asymmetric Transformations Application of Enzymatic (D)KR in Enantioselective Synthesis

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Richard Lihammar; Jan-Erling Bäckvall; Wolfgang Kroutil; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dynamic Kinetic Resolution; Kinetic Resolution; Enzyme Catalysis; Asymmetric Synthesis; Organic Chemistry; organisk kemi;

    Abstract : Dynamic kinetic resolution (DKR) is a powerful method for obtaining compounds with high optical purity. The process relies on the combination of a kinetic resolution with an in situ racemization. READ MORE