Search for dissertations about: "heterocyclic chemistry"

Showing result 21 - 25 of 40 swedish dissertations containing the words heterocyclic chemistry.

  1. 21. The GABAA Receptor as Target for Novel Heterocyclic Compounds

    Author : Jakob Nilsson; Lunds universitet.; Lund University.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Ligands for the benzodiazepine-binding site of the GABAA receptor can belong to structurally diverse classes of compounds including, in spite of the name of the binding site, many non-benzodiazepine structures. The GABAA receptor is a ligand-gated ion channel assembled of five subunits from eight different classes with multiple isoforms. READ MORE

  2. 22. Studies of Hydrogenations and Isomerizations of Olefins and Alkylations of Amines Using Iridium Catalysts

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jia-Qi Li; Uppsala universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Iridium; Asymmetric; Hydrogenation; Isomerization; Alkylation; Organisk kemi; Organic Chemistry;

    Abstract : This thesis describes three types of reactions that were carried out using iridium catalysts.The first type is the iridium-catalyzed asymmetric hydrogenation of olefins. In paper I, the preparation of a new type of bicyclic thiazole-phosphine based iridium complex was described. READ MORE

  3. 23. Palladium(II)-catalyzed 1,4-oxidations of 1,3-dienes : Development of an asymmetric version and synthetic applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Andreas Palmgren; Uppsala universitet.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; organisk kemi; Organic Chemistry;

    Abstract : In this thesis the development of an asymmetric version and synthetic applications of the Pd(II)-catalyzed 1,4-oxidation of conjugated dienes are described. The thesis is divided into four parts:(i) The first part concerns the design and synthesis of chiral p-benzoquinones as ligands in the Pd(II)-catalyzed 1,4-diacetoxylation. READ MORE

  4. 24. N-Heterocyclic Carbene-Phosphine Iridium Catalyzed Alkylation Reactions and Asymmetric Hydrogenation of Ketones

    University dissertation from Stockholm : Stockholm University

    Author : Sutthichat Kerdphon; Stockholms universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; C-C coupling reactions; hydrogen transfer; iridium; ketones; methylation;

    Abstract : This thesis is focused on hydrogen transfer reactions using N-heterocyclic carbenephosphine iridium catalysts and is divided in two parts. The first part describes the use of achiral N-heterocyclic carbene-phosphine iridium complexes catalyzing the methylation of ketones and alkylation of amides using alcohols as the electrophile. READ MORE

  5. 25. Photo-induced molecular processes and charge recombination reactions driven by non-adiabatic couplings

    University dissertation from Stockholm : Department of Physics, Stockholm University

    Author : Michael Stenrup; Stockholms universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Non-adiabatic processes; Photophysics; Photochemistry; Radiationless deactivation; Conical intersections; Five-membered aromatic heterocyclic compounds; Mutual neutralization; Dissociative recombination; Chemical Physics; kemisk fysik;

    Abstract : This thesis is based on a number of theoretical studies of molecular processes in which non-adiabatic effects play a crucial role. The main part is devoted to the photophysics and photochemistry of five-membered aromatic heterocyclic compounds, with particular focus on furan and thiophene. READ MORE