Search for dissertations about: "heterocyclic chemistry"

Showing result 16 - 20 of 41 swedish dissertations containing the words heterocyclic chemistry.

  1. 16. New C-C coupling Reactions Enabled by Main-group Organometallics

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Kilian Colas; Stockholms universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; C-C coupling; organometallics; aluminum; magnesium; Grignard; turbo-Hauser-bases; piperazines; sulfur; ketones; Organic Chemistry; organisk kemi;

    Abstract : The carbon-carbon bond has always been at the very core of chemical research. Strategies for the creation of C−C bonds are one of the keys to the construction game that organic chemists play with the building blocks provided by Nature, with the ultimate goal of producing useful molecular structures that will serve society as medicines, materials, imaging tools, catalysts, and ligands (to mention but a few). READ MORE

  2. 17. Development and Applications of Molybdenum-Catalyzed Chemoselective Amide Reduction

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Tove Slagbrand; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrosilylation; reduction; reductive functionalization; catalysis; amides; enamines; chemoselective; Organic Chemistry; organisk kemi;

    Abstract : 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. READ MORE

  3. 18. Homogeneous and heterogeneous Cp*Ir(III) catalytic systems : Mechanistic studies of redox processes catalyzed by bifunctional iridium complexes, and synthesis of iridium-functionalized MOFs

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Greco González Miera; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; catalysis; bifunctional; metal-ligand cooperation; amine alkylation; Hammett; kinetics; acceptorless alcohol dehydrogenation; MOF; transition metal; synchrotron; Organic Chemistry; organisk kemi;

    Abstract : The purpose of this doctoral thesis is to investigate and develop catalytic processes mediated by iridium(III) complexes. By understanding the mechanisms, the weaknesses of the designed catalysts can be identified and be overcome in the following generation. READ MORE

  4. 19. Transition metal-catalysed hydrogen transfer processes for C-C and C-N bond formation Synthetic studies and mechanistic investigations

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Agnieszka Bartoszewicz; Stockholms universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hydrogen transfer; catalysis; transition metal; Organic Chemistry; organisk kemi;

    Abstract : This thesis focusses on synthetic studies and mechanistic investigations into reactions involving hydrogen-transfer processes.In the first part, the development of an efficient method for the synthesis of β-hydroxy ketones (aldols) and β-amino ketones (Mannich products) from allylic alcohols and aldehydes is described. READ MORE

  5. 20. Direct Catalytic Nucleophilic Substitution of Non-Derivatized Alcohols

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Anon Bunrit; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nucleophilic substitution; catalysis; alcohols; stereospecific; Lewis acid; Brønsted acid base; bifunctional; heterocycles; Organic Chemistry; organisk kemi;

    Abstract : This thesis focuses on the development of methods for the activation of the hydroxyl group in non-derivatized alcohols in substitution reactions. The thesis is divided into two parts, describing three different catalytic systems. READ MORE