Sökning: "decarboxylation"

Visar resultat 1 - 5 av 23 avhandlingar innehållade ordet decarboxylation.

  1. 1. Development of HIV-1 Protease Inhibitors and Palladium-Catalyzed Synthesis of Aryl Ketones and N-Allylbenzamides

    Författare :Linda Axelsson; Mats Larhed; Anders Karlén; Luke Odell; Morten Grötli; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; palladium; aminocarbonylation; aryl ketones; decarboxylation; HIV; protease inhibitor; tertiary alcohol; macrocycles; Medicinal Chemistry; Läkemedelskemi;

    Sammanfattning : The use of palladium-catalyzed reactions to introduce new carbon-carbon bonds is a fundamental synthetic strategy that has been widely embraced due to its high chemo- and regioselectivity and functional group tolerance. In this context, Pd(0)-catalyzed aminocarbonylations using Mo(CO)6 instead of toxic and gaseous CO and with allylamine as the nucleophile were investigated. LÄS MER

  2. 2. Palladium(II)-Catalyzed Heck Reactions : Domino Reactions, Decarboxylations, Mechanistic Studies & Continuous Flow Applications

    Författare :Ashkan Fardost; Mats Larhed; Patrick Guiry; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palladium II ; dft; reaction mechanisms; esi-ms; heck; decarboxylation; microwave; continuous flow;

    Sammanfattning : This thesis describes research efforts dedicated to the development of palladium(II)-catalyzed oxidative Heck and Heck/Suzuki domino reactions, and the applications of a new microwave heating technology, purpose-built for continuous flow in organic synthesis.Paper I describes the development of a ligand-modulated approach for attaching aryl groups to a chelating vinyl ether. LÄS MER

  3. 3. Quantum Chemical Cluster Modeling of Enzymatic Reactions

    Författare :Rongzhen Liao; Fahmi Himo; Robert Deeth; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cluster approach; density functional theory; B3LYP; enzyme; mechanism; dinuclear; trinuclear; zinc; tungsten; hydrolysis; decarboxylation; formaldehyde oxidation; hydration; methyl transfer; Quantum chemistry; Kvantkemi; organisk kemi; Organic Chemistry;

    Sammanfattning : The Quantum chemical cluster approach has been shown to be quite powerful and efficient in the modeling of enzyme active sites and reaction mechanisms. In this thesis, the reaction mechanisms of several enzymes have been investigated using the hybrid density functional B3LYP. LÄS MER

  4. 4. Quantum Chemical Modeling of Asymmetric Enzymatic Reactions

    Författare :Maria E. S. Lind; Fahmi Professor; Rajeev Prabhakar; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biocatalysis; enantioselectivity; density functional theory; B3LYP; enzyme; hydrolysis; decarboxylation; Organic Chemistry; organisk kemi;

    Sammanfattning : Computational methods are very useful tools in the study of enzymatic reactions, as they can provide a detailed understanding of reaction mechanisms and the sources of various selectivities. In this thesis, density functional theory has been employed to examine four different enzymes of potential importance for biocatalytic applications. LÄS MER

  5. 5. Primary reactions in crystalline salts of tartaric acids, α-amino acids and monochloroacetic acid studied by pulse radiolysis and ESR spectroscopy

    Författare :Per-Olof Samskog; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Primary reactions in irradiated single crystals of salts of tartaric acids, a-amino acids and monochloroacetic acid have been studied by pulse radiolysis and ESR spectroscopy. The primary products are formed by the loss or capture of an electron and are referred to as oxidation and reduction products. LÄS MER