Sökning: "pyridines"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet pyridines.

  1. 1. Investigation of Symmetry and Electronic Effects in Asymmetric Palladium-Catalysed Allylic Substitutions

    Författare :Robert Stranne; KTH; []
    Nyckelord :chiral ligands; catalysis; pseudo-C2; pseudo-meso; pyrrolidines; pyridines; phospholanes; 1; 1-binaphthylazepines; 1.1-binaphthylphosphepines; allylic substitution; palladium;

    Sammanfattning : .... LÄS MER

  3. 2. Iridium Catalysed Asymmetric Hydrogenation of Pyridines

    Författare :Alban Cadu; Pher G. Andersson; Hans Adolfsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydrogenation; pyridine; catalytic; Iridium; Organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis presents the hydrogenation of substituted pyridines using N,P-ligated iridium catalystsin homogeneous media. These iridium catalysts were developed within this research group in thepast decade. This method of hydrogenation is highly stereoselective, and in several cases good to excellent ees were obtained. LÄS MER

  4. 3. Reaction Between Grignard reagents and Heterocyclic N-oxides : Synthesis of Substituted Pyridines, Piperidines and Piperazines

    Författare :Hans Andersson; Fredrik Almqvist; Hans Adolfsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Grignard reagents; pyridine N-oxide; pyrazine N-oxide; dienal-oxime; pyridine; ortho- metalation; piperidine; piperazine; asymmetric; Organic synthesis; Organisk syntes; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis describes the development of new synthetic methodologies for preparation of bioactive interesting compounds, e.g. substituted pyridines, piperidines or piparazines. Thesecompounds are synthesized from commercially available, cheap and easily prepared reagents, videlicet the reaction between Grignard reagents and heterocyclic N-oxides. LÄS MER

  5. 4. Aspects of hydrogen bonding in biological model compounds : Hydrogen-bond. 95. Diffraction studies of hydrogen bonding in pyridines, pyrimidines and amino acids

    Författare :Åke Kvick; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  7. 5. Synthesis of sulfur and selenium heterocycles, including derivatives of imidazopyridine and benzimidazole

    Författare :Malin Björk; Spiros Grivas; Christopher A. Ramsden; Södertörns högskola; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Aminoimidazoazaarenes; thienomethyleneimidazolinones; imidazo[4; 5b]pyridines; Friedländer; imidazo[4; 5-e]-2; 1; 3-benzoselenadiazoles; 2-aminobenzimidazoles. palladium catalyzed coupling reactions.;

    Sammanfattning : The chemistry developed in this thesis can be divided into two parts. The first part, which is the major part of the thesis, contains syntheses towards analogues to mutagenic heterocyclic amines found in e.g. meat fried at high temperatures. LÄS MER