Search for dissertations about: "ANNULATION REACTIONS"

Found 5 swedish dissertations containing the words ANNULATION REACTIONS.

  2. 1. New Methods for the Synthesis of 3-Substituted 1-Indanones : A Palladium-Catalyzed Approach

    Author : Anna Arefalk; Anders Hallberg; Mats Larhed; Juan Carlos Carretero; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Heck; palladium; indanone; annulation; microwave heating; triflate; sulfinyl imine; HIV-1 protease inhibitor; Organisk kemi; Organic chemistry; Organisk kemi;

    Abstract : In medicinal chemistry, there is a constant need for new preparative methods, both to make the synthesis process more effective, and to increase the accessibility to a wide variety of compounds. A number of different approaches can be used to attain these goals. READ MORE

  4. 2. Novel strategies for C-C/X bond formation

    Author : Prasad Anaspure; Ian A. Nicholls; Suppan Kathiravan; Jesper G. Wiklander; Subramanian Suriyanarayanan; Yannick Landais; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; annulation; C-H activation; heterocycles; heterogeneous catalysis; homogeneous catalysis; lab-on-a-chip; Suzuki cross-coupling; Organic Chemistry; Organisk kemi;

    Abstract : The formation of C-C/X bonds is essential for the manufacture of a broad range of chemicals and materials used in areas critical for maintaining quality of life in modern society, e.g. pharmaceuticals, agrochemicals and polymers, and for aspects of research in organic chemistry. READ MORE

  5. 3. Development of new Catalytic Methods for the Selective Synthesis of Heterocycles

    Author : Stalin Reddy Pathi Pati; Nicklas Selander; Masaharu Nakamura; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; catalysis; indium; heterocycles; Lewis acid; multicomponent reactions; furans; alkynes; organisk kemi; Organic Chemistry;

    Abstract : In the field of organic chemistry, the development of new catalytic methods for the synthesis of complex molecules from simple precursors is a top priority. The main focus of this thesis concerns the diastereoselective synthesis of heterocyclic compounds using main group elements as Lewis acid catalysts. READ MORE

  6. 4. The cyanobacterial pigments scytonemin and nostodione A - Synthesis, photophysicochemical behavior and biological studies

    Author : Andreas Ekebergh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; UV-screeners; design of experiments; cascade reactions; palladium catalysis; nostodione A; ligand effect; gold catalysis; kinase inhibitor; Scytonemin; photo-stability;

    Abstract : The natural UV-screener scytonemin is found in a plethora of cyanobacterial species. Its UV-protective ability allows the bacteria to thrive in inhospitable locations exposed to intense solar radiation. Scytonemin has a dimeric structure consisting of two 1-1' linked 3-(4-hydroxybenzylidene)cyclopenta[b]indole-2-one moieties. READ MORE

  7. 5. Strategies and Methods for Synthesizing Scytonemin Analogues

    Author : Andreas Ekebergh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Natural product synthesis is an exciting field of organic chemistry, directed toward constructing naturally occurring compounds, which often are both chemically complex and biologically intriguing. Scytonemin is a unique, dimeric natural product found in cyanobacteria. READ MORE