Search for dissertations about: "METHYL"

Showing result 1 - 5 of 601 swedish dissertations containing the word METHYL.

  2. 1. C1 Building Blocks: New Approaches for Thiomethylations and Esterification

    Author : Marcus Söderström; Luke R. Odell; Anders Karlén; Vittorio Pace; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Borontrifluoride; Dimethylsulfide; Thiomethylation; Methylthioethers; Dithioacetalation; Methyl-Dithioacetals; Friedel-Crafts; Diarylmethanes; Defluorination; Methyl-Dithioesters; Thioamides; Diazomethane; Esterification; Medicinal Chemistry; Läkemedelskemi; Medicinal Chemistry; Läkemedelskemi;

    Abstract : The thioether motif is found in numerous pharmaceuticals. The simplest form of this motif, the methyl-thioether is similarly found in many biologically active compounds and has exhibited many advantageous properties. The installation of the thiomethyl moiety can be troublesome due to the toxicity and malodor of small sulfur reagents. READ MORE

  4. 2. Bis(4-chlorophenyl) sulfone and PCB methyl sulfone metabolites : Trends and chirality in the Baltic Sea environment

    Author : Karin Norström; Åke Bergman; Mats Olsson; Roland Kallenborn; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bis 4-chlorophenyl sulfone; PCB methyl sulfone; Baltic Sea; Environmental chemistry; Miljökemi;

    Abstract : The Baltic Sea was earlier identified as a highly polluted brackish water body and still is. The high concentrations of polychlorinated biphenyls (PCBs), p,p’-DDT and related compounds led to severe effects on several species in the Baltic region. READ MORE

  5. 3. Atropisomers of PCB methyl sulfone metabolites : radiosynthesis, analysis and distribution

    Author : Christina Larsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Miljögifter;

    Abstract : .... READ MORE

  6. 4. Effects of methyl jasmonate on chemical defenses of conifer seedlings in relation to feeding by Hylobius abietis

    Author : Lina Lundborg; Anna-Karin Borg-Karlson; Irena Valterová; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Needles; Phloem; Feeding; Vaccination; Priming; Methyl jasmonate; Aromatics; Phenolics; Monoterpenes; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Barr; Floem; Ätning; Vaccinering; Metyljasmonat; Aromater; Fenoler; Monoterpener; Kemi; Chemistry;

    Abstract : The chemical elicitor methyl jasmonate (MeJA) could replace insecticides in Europe and Asia for protection of young conifers against the pine weevil (Hylobius abietis). This thesis mainly focuses on the effects of MeJA treatment on chemical defenses of conifers from seedling batches with documented field resistance. READ MORE

  7. 5. Stable bromine isotopic composition of methyl bromide : Method development and applications

    Author : Axel Horst; Örjan Gustafsson; Detlef Schulz-Bull; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : The isotopic composition of ozone depleting methyl halides may provide valuable information on the sources and sinks of these compounds. However, so far mostly stable carbon isotope analysis of methyl chloride and methyl bromide (CH3Br) has been attempted. READ MORE