Sökning: "nitrogen heterocycles"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden nitrogen heterocycles.

  1. 1. Transformations of Nitrosoarenes and Alkynyl Enones : Selective Synthesis of Nitrogen-Containing Compounds

    Författare :Angela van der Werf; Nicklas Selander; Gary A. Molander; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alkynyl enones; catalysis; copper; halogenation; heterocycles; nitrosoarenes; perfluoroalkylation; trifluoromethylation; organisk kemi; Organic Chemistry;

    Sammanfattning : The nitrogen atom plays a unique role in organic chemistry. It is abundantly found in organic materials and is responsible for the activity of many biologically relevant compounds. LÄS MER

  3. 2. Synthesis of Nitrogen Heterocycles and Ruthenium Complexes

    Författare :Johan Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 3. Ruthenium-catalyzed C-H Functionalization of (Hetero)arenes

    Författare :Karthik Devaraj; Lukasz T. Pilarski; Victor A. Snieckus; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; catalysis; C-H activation; heterocycles; ruthenium; aryne precursor; silylation; gramine;

    Sammanfattning : This thesis concerned about the Ru-catalyzed C-H functionalizations on the synthesis of 2-arylindole unit, silylation of heteroarenes and preparation of aryne precursor.In the first project, we developed the Ru-catalyzed C2-H arylation of N-(2-pyrimidyl) indoles and pyrroles with nucleophilic arylboronic acids under oxidative conditions. LÄS MER

  5. 4. Development of Lewis acid mediated stereoselective synthesis of nitrogen containing heterocycles

    Författare :Åsa Sjöholm Timén; KTH; []
    Nyckelord :organic chemistry;

    Sammanfattning : This thesis deals with the development of syntheticmethodologies for the preparation of enantio- anddiastereomerically enriched nitrogen-containingheterocycles.Asymmetric Lewis acid mediated Diels-Alder reactions with2H-azirines as dienophiles have been studied. LÄS MER

  7. 5. Synthetic studies of nitrogen containing heterocycles, particularly pyrazole and benzotriazine derivatives

    Författare :Azadeh Nakhai; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Pyrazole; indazole; tetrahydroindazoles; hexahydroindazoles; alpha; beta-unsaturated ketones; dihydropyrazolone; 3; 3 -biindolyl; 3; 3 -biindazolyl; o-azidobenzonitriles; benzotriazine; aryl-triazene;

    Sammanfattning : This thesis will mainly focus on the chemistry of nitrogen containing heterocyclic compounds, particularly pyrazole and benzotriazine and related ring systems to these compounds. The first part includes a short introduction to biologically important compounds as well as a description of reactivity and chemistry of benzo[c]pyrazole (indazole) and its derivatives. LÄS MER