Sökning: "NATURAL SCIENCES Chemistry Organic chemistry Pharmaceutical chemistry"

Visar resultat 21 - 25 av 41 avhandlingar innehållade orden NATURAL SCIENCES Chemistry Organic chemistry Pharmaceutical chemistry.

  1. 21. Transition metal-catalyzed allylic and vinylic functionalization : Method development and mechanistic investigations

    Författare :Johanna M. Larsson; Kálmán J. Szabó; Dennis G. Hall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palladium; copper; catalysis; Heck reaction; C-H functionalization; allylic substitution; silylation; borylation; trifluoromethylation; fluorination; mechanistic study; transition metal; alkene; allylic silane; allylic boronate; allylic fluoride; organisk kemi; Organic Chemistry;

    Sammanfattning : The use of small molecule building blocks in, for example, pharmaceutical research and new material development, creates a need for new and improved organic synthesis methods. The use of transition metals as mediators and catalysts opens up new reaction pathways that have made the synthesis of completely new compounds possible as well as greatly improved the synthetic routes to known compounds. LÄS MER

  3. 22. Catalytic Processes Mediated by Metal−Organic Frameworks : Reactivity and Mechanistic Studies

    Författare :Vlad Pascanu; Belén Martín-Matute; Seth Cohen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organisk kemi; Organic Chemistry;

    Sammanfattning : The present thesis describes the development of heterogeneous catalytic methodologies using metal−organic frameworks (MOFs) as porous matrices for supporting transition metal catalysts. A wide spectrum of chemical reactions is covered. LÄS MER

  4. 23. Development and Applications of Molybdenum-Catalyzed Chemoselective Amide Reduction

    Författare :Tove Slagbrand; Hans Adolfsson; André Charette; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrosilylation; reduction; reductive functionalization; catalysis; amides; enamines; chemoselective; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis covers the development of catalytic methodologies for the mild and chemoselective hydrosilylation of amides. The first part describes the investigation of the Mo(CO)6-catalyzed reduction of carboxamides. LÄS MER

  5. 24. Structure and function of relaxins

    Författare :Linda M. Haugaard-Kedström; Johan Rosengren; Torleif Härd; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; relaxin; insulin-like peptide; peptide hormone; peptide synthesis and NMR; Organic Chemistry; Organisk kemi;

    Sammanfattning : The relaxin/insulin superfamily is a group of peptide hormones that consists of ten members in human, namely relaxins 1-3, insulin-like peptides (INSL) 3-6, insulin and insulin-like growth factors (IGF) I-II. These peptides have various functions in the body, such as regulating growth, blood glucose levels,  collagen metabolism, germ cell maturation and appetite. LÄS MER

  7. 25. Metal Organic Frameworks: History, Synthesis, and Topological approach

    Författare :Cédric Borel; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MOF; crystal structures; crystal engineering; network; coordination chemistry; synthesis; TOPOS; systre; gas storage;

    Sammanfattning : The storage, separation, purification and catalytic reactions of small molecules are important research domains in both pure and applied chemistry, where porous materials play a major role. Among the different possible options for the preparation porous materials a recent approach is to build structures based on metal ions, metal complexes, or metal clusters, bridged by organic ligands. LÄS MER