Sökning: "organic solvents"

Visar resultat 6 - 10 av 221 avhandlingar innehållade orden organic solvents.

  1. 6. Use of Aqueous Slurries of Oxides for Ecocompatible Organic Synthesis

    Författare :Zebastian Boström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : There is a continuous interest and need of developing environmentally benign synthetic routes. Increased public awareness and more rigid environmental legislation have elevated the drive towards sustainable development and ecocompatible syntheses. LÄS MER

  3. 7. Studies on nucleoside H-phosphonoselenoate chemistry and chalcogen exchange reaction between P(V) and P(III) compounds

    Författare :Martin Kullberg; Jacek Stawinski; Wojciech Markiewicz; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Phosphorus chemistry; H-phosphonate; H-phosphonoselenoate; nucleotide analogues; selenization; selenium transfer; phosphoroselenoate; Organic chemistry; Organisk kemi;

    Sammanfattning : In this thesis, the chemistry of compounds containing P-Se bonds has been studied. As a new addition to this class of compounds, H-phosphonoselenoate monoesters, have been introduced and two synthetic pathways for their preparation have been developed. LÄS MER

  4. 8. Development of New Efficient Iridium-Catalyzed Methods for the Construction of Carbon-Heteroatom Bonds

    Författare :Elis Erbing; Belén Martín-Matute; Keary Engle; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Iridium Catalysis; Method development; Halogenation; Isomerization; C-H Activation; organisk kemi; Organic Chemistry;

    Sammanfattning : Today’s society has a large demand for biologically active chemicals that can be used for example as pharmaceuticals and in the agriculture. These are normally constructed by assembling together several smaller chemical molecules. LÄS MER

  5. 9. Structure, dynamics and reactivity of carbohydrates : NMR spectroscopic studies

    Författare :Jerk Rönnols; Göran Widmalm; Mikael Bols; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Conformation; NMR spectroscopy; Hydrogen bond; organisk kemi; Organic Chemistry;

    Sammanfattning : The main focus of this thesis is on the ring conformations of carbohydrate molecules; how the conformational equilibria and the rates of the associated interconversions are affected by the molecular constitution and their surroundings.The conformational equilibria of a group of amine linked pseudodisaccharides, designed as potential glycosidase inhibitors, comprising α-D-altrosides are described in Chapter 3. LÄS MER

  7. 10. Synthesis and applications of analogues of Tröger's base as molecular tubes, receptor and ligands

    Författare :Anna Hansson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; bis-crown ether analogue; molecular recognition; molecular tubes; Tröger s base; dihalo-analogues;

    Sammanfattning : Tröger’s base was synthesized for the first time in 1887. The molecule is rigid, C2-symmetric and has a 90° angle, forming a chiral hydrophobic pocket. In this thesis, the synthesis of new analogues of Tröger’s base is described. 2- and 3-halo-substituted anilines have for the first time been condensed to Tröger’s base analogues. LÄS MER