Sökning: "diene"

Visar resultat 1 - 5 av 35 avhandlingar innehållade ordet diene.

  1. 1. Stereoselective syntheses of semichemicals : Applications in ecological chemistry

    Författare :Ellen M. Santangelo; Anna-Karin Borg-Karlsson; Olov Sterner; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; synthesis; semiochemical; pheromone; Lepidoptera; diene; Organisk kemi; Organic chemistry; Organisk kemi;

    Sammanfattning : This thesis describes the syntheses of semiochemicals and their applications in the development of control methods for pest insects. The compounds synthesized are divided into three groups: 1) Lepidoptera pheromones; 2) methyl substituted chiral pheromones and 3) aphid pheromones. LÄS MER

  3. 2. Pheromone Synthesis : Conjugated Diene Systems and Oxygenated Carene Derivatives

    Författare :Rikard Unelius; Torbjörn Norin; Lars Skatteböl; KTH Organic Chemistry; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pheromone diene carene derivative; Organic Chemistry; Organisk kemi;

    Sammanfattning : .... LÄS MER

  4. 3. High pressure vulcanization : crosslinking of diene rubbers without vulcanization agents

    Författare :Martin Bellander; KTH; []
    Nyckelord :;

    Sammanfattning : High pressure vulcanization (HPV) is defined in this thesisas crosslinking of rubber materialsat elevated pressure andtemperature, without the use of any vulcanization agents. Thisis atotally new vulcanization technique, not used in theindustry today. LÄS MER

  5. 4. Organomolybdenum Complexes in Organic Synthesis- New methods for the Preparation of Cationic Diene Complexes and Applications to Synthesis

    Författare :Emelie Bjurling; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; indoles; carbenium ions; hexafluoroisopropanol; hydride abstraction; molybdenum; cationic diene complexes;

    Sammanfattning : Indolyl substituted pyranyl- and cyclohexenyl molybdenum complexes were synthesised through stereoselective nucleophilic addition of indoles to the corresponding cationic 2H-pyran or cyclohexadiene molybdenum complex. Decomplexation of an allylic molybdneum complex by treatment with iodine gave 1-(4-iodo-2-cyclohexenyl)-1H-indole-3-carbonitrile in high regio-selectivity. LÄS MER

  7. 5. Silaborations of Unsaturated Compounds

    Författare :Martin Gerdin; Christina Moberg; Kálmán Szabó; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; allylboration; bismetallation; boron; carbocyclization; catalysis; 1; 3-diene; enantioselective; 1; 6-enyne; interelement; N-heterocyclic carbene; nickel; palladium; phosphine; phosphoramidite; platinum; reaction mechanism; silaboration; silicon; silylborane; stereoselective; Chemistry; Kemi;

    Sammanfattning : This thesis deals with the development of transition metal-catalyzed silaborations of 1,3-dienes and 1,6-enynes. The first part of the thesis describes the development of the enantioselective 1,4-silaboration of 1,3-cyclohexadiene. A number of chiral metal-ligand complexes were evaluated. LÄS MER