Sökning: "Kemi med inriktning mot organisk kemi"

Visar resultat 21 - 25 av 45 avhandlingar innehållade orden Kemi med inriktning mot organisk kemi.

  1. 21. Organocatalytic Acylation for the Kinetic Resolution of Secondary Aryl Alcohols : Synthetic Applications and Mechanistic Studies

    Författare :Laura Mesas Sánchez; Peter Dinér; Pavel Kočovský; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kinetic resolution; organocatalysis; secondary alcohols; reaction progress kinetic analysis; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Sammanfattning : The research described in this thesis focuses on the catalytic acylative kinetic resolution (KR) of aromatic secondary alcohols, using a planar-chiral 4-(dimethylamino)pyridine (DMAP) organocatalyst.In the first part of this thesis, the substrate scope of the above mentioned process was expanded to aromatic secondary alcohols that contain an extra functional group in the alkyl moiety, such as 1,2-azido alcohols, 2-hydroxy-2-aryl-ethylphosphonates and 2-hydroxy-2-aryl esters. LÄS MER

  3. 22. Modulation of Molecular Properties : Host–Guest Interactions for Structural Analysis and Chemical Reactions

    Författare :Sara Norrehed; Adolf Gogoll; Jerker Mårtensson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; host-guest systems; conformational analysis; NMR spectroscopy; bispidines; porphyrins; Kemi med inriktning mot organisk kemi; Chemistry with specialization in Organic Chemistry;

    Sammanfattning : This thesis concerns the construction, use and modulation of various host–guest systems, from small bispidines for binding of inorganic ions to bisporphyrin clips for supramolecular systems.Small flexible molecules undergo fast conformational movements when in solution. LÄS MER

  4. 23. Development and Multicolor Imaging Applications of Lanthanide-Based Luminescent Probes

    Författare :Elias Pershagen; K. Eszter Borbas; Stéphane Petoud; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lanthanide; luminescent probe; multicolor; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Sammanfattning : The study of biological analytes in their native environment is a major challenge for biochemistry and molecular biology.  Luminesce spectroscopy is well suited for this task due to its non-invasiveness, high spatial and temporal resolution, and high signal to noise ratio. LÄS MER

  5. 24. Transition Metal Catalysis for Selective Synthesis and Sustainable Chemistry

    Författare :J. Johan Verendel; Pher G. Andersson; Reko Leino; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Catalysis; Transition metals; Asymmetric catalysis; Hydrogenation; Sustainable chemistry; Kemi med inriktning mot organisk kemi; Chemistry with specialization in Organic Chemistry;

    Sammanfattning : This thesis discusses the preparation and use of transition-metal catalysts for selective organic chemical reactions. Specifically, two different matters have been studied; the asymmetric hydrogenation of carbon-carbon double bonds using N,P-ligated iridium catalysts and the metal-catalyzed transfer of small molecules from biomass to synthetic intermediates. LÄS MER

  7. 25. Conformationally Constrained Nucleic Acids as Potential RNA Targeting Therapeutics

    Författare :Zhou Chuanzheng; Jyoti Chattopadhyaya; Serge Beaucage; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bioorganic chemistry; Bioorganisk kemi; Chemistry with specialization in Bioorganic Chemistry; Kemi med inriktning mot bioorganisk kemi;

    Sammanfattning : .... LÄS MER