Search for dissertations about: "cycloisomerization"

Showing result 1 - 5 of 8 swedish dissertations containing the word cycloisomerization.

  2. 1. Iron-Catalyzed Reactions and X-Ray Absorption Spectroscopic Studies of Palladium- and Ruthenium-Catalyzed Reactions

    Author : Arnar Guðmundsson; Jan-Erling Bäckvall; Hans-Joachim Knölker; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Iron; XAS; Cycloisomerization; DKR; Oxidation; organisk kemi; Organic Chemistry;

    Abstract : The focus of this thesis is twofold: The first is on the application of iron catalysis for organic transformations. The second is on the use of in situ X-ray absorption spectroscopy (XAS) to investigate the mechanisms of a heterogeneous palladium-catalyzed reaction and a homogeneous ruthenium-catalyzed reaction. READ MORE

  4. 2. The Use of N,P-Iridium and N,P-Palladium Complexes in Asymmetric Synthesis

    Author : Wangchuk Rabten; Pher Andersson; Virginie Vidal; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Iridium; Asymmetric Hydrogenation; Palladium; Asymmetric Cycloisomerization and Hosomi-Sakurai Allylation; organisk kemi; Organic Chemistry;

    Abstract : The work presented in this thesis concerns asymmetric catalysis using chiral N,P-ligands and iridium or palladium transition metals. The first part  (Chapters 2 and 3) highlights the N,P-iridium catalyzed asymmetric hydrogenation of 1,4-cyclohexadienes having functionalized or unfunctionalized substituents, including allylsilane side chains. READ MORE

  5. 3. Development and Application ofEnzymatic Asymmetric Synthesis ofFunctionalized Alcohols

    Author : Bin Yang; Jan-Erling Bäckvall; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The main focus of this thesis lies on enzymatic asymmetric organic reactions. In the first part ofthis work, we looked into the lipase-catalyzed transesterification and hydrolysis at the molecularlevel. READ MORE

  6. 4. Catalytic Stereoselective Formation of C–O, C–C and C–B Bonds : A Voyage from Asymmetric Reactions Enabled by Lipases to Stereoselective Palladium-Catalyzed Oxidative Transformations of Enallenes

    Author : Bin Yang; Jan Bäckvall; Matthias Beller; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Synthesis; Enzymatic kinetic resolution; Palladium; Allenes; Oxidative Transformations; Ruthenium; organisk kemi; Organic Chemistry;

    Abstract : This thesis has been focused on enzymatic kinetic resolutions and stereoselective oxidative transformations of enallenes catalyzed by PdII.In the first part of the thesis, a detailed discussion on Candida antarctica lipase B (CALB)-catalyzed kinetic resolution (KR) of δ-functionalized alkan-2-acetates is shown. READ MORE

  7. 5. Development and Applications of Surface-Confined Transition Metal Complexes : Heterogeneous Catalysis and Anisotropic Particle Surfaces

    Author : Kristofer Eriksson; Jan-Erling Bäckvall; Graham Hutchings; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; heterogeneous catalysis; anisotropic particles; protein gradients; nanoparticles; organisk kemi; Organic Chemistry;

    Abstract : The main focus of this thesis has been directed towards developing novel surface-confined transition metal complexes for applications in heterogeneous catalysis and for the preparation of anisotropic particle surfaces. The first part describes the heterogenization of a homogeneous transition metal-based catalyst tetraphenyl cobalt porphyrin (CoTPP) on silicon wafers and on silica particles. READ MORE