Sökning: "Polar organic compounds"

Visar resultat 1 - 5 av 41 avhandlingar innehållade orden Polar organic compounds.

  1. 1. Selective Transformations of Allylic Compounds and Enol Derivatives : Synthesis of Fluorinated and Nitrogenated Scaffolds

    Författare :Víctor García-Vázquez; Belén Martín‐Matute; Mario Waser; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fluorinated compounds; Base catalysis; Ion-Pair; Isomerization; Pd catalysis; Method development; Hypervalent iodine III ; Organic Chemistry; organisk kemi;

    Sammanfattning : In this thesis, new synthetic methods to give access to molecules having fluorinated scaffolds and other polar functional groups have been developed. The methods give access to highly valuable organic compounds that may serve as building blocks in the synthesis of functionalized drug candidates. LÄS MER

  3. 2. Methodologies to assess the fate of polar organic compounds in aquatic environments

    Författare :Jörgen Magnér; Tomas Alsberg; Dag Broman; Jan-Åke Jönsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Passive equilibrium sampler; Absorbent; Polar organic compounds; Liquid chromatography-mass spectrometry; Partitioning coefficient; Fulvic acid; Sediment; PEVAC; Bag-SPE; Solid phase extraction; Pharmaceuticals; Wastewater; Sea water; UPLC-QToF; Environmental chemistry; Miljökemi; Analytical chemistry; Analytisk kemi; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Polar organic compounds (POCs) are chemicals with polar functional groups in their structure. The functional groups make the compounds hydrophilic and less prone to partition with biota. However, the knowledge of their fate is limited due to difficulties associated with their measurements. LÄS MER

  4. 3. Synthetic studies of rigid tetracyclic oxanorbornanes. Regioselective reductive Heck arylation of a tetracyclic scaffold

    Författare :Andreas Wållberg; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; oxanorbornane; rigid; Heck-reaction; regioselective; Organisk kemi;

    Sammanfattning : Rigid or conformationally restricted compounds are intresting from a pharmacological point of view since they do not have to pay the entropy penalty paid by more flexible molecules in binding to e.g. a protein. LÄS MER

  5. 4. Naphthoxylosides Investigations into glycosaminoglycan biosynthesis

    Författare :Mårten Jacobsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; proteoglycan; Organic chemistry; nucleophilic aromatic substitution; thioether; glycosaminoglycan; xylosides; naphthoxylosides;

    Sammanfattning : Glycosaminoglycans (GAGs) are members of a family of polysaccharide structures consisting mostly of repeating disaccharide units. Most GAGs are attached to specific serine residues in proteins to form proteoglycans (PGs). LÄS MER

  7. 5. Sample Preparation of Organic Compounds in Environmental Analysis using Liquid Membrane Extraction

    Författare :Luke Chimuka; Kemiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reverse phase liquid chromatography; octanol-water partition coefficients; phenolic compounds; s-triazines; supported-liquid membrane extraction; environmental analysis; UV detection; Analytical chemistry; Analytisk kemi;

    Sammanfattning : This thesis demonstrates the potential of the liquid membrane extraction technique as an alternative method for the analysis of trace ionisable organic compounds in the environment. Liquid membrane based extraction methods for the analysis of s-triazine herbicides and phenolic compounds were developed. LÄS MER