Sökning: "vinyl ester"

Visar resultat 11 - 15 av 29 avhandlingar innehållade orden vinyl ester.

  1. 11. Syntheses of functionalized Phe-Gly dipeptidomimetics

    Författare :Wei Berts; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; Farmaceutisk kemi; Pharmaceutical chemistry; Farmaceutisk kemi; Organic Pharmaceutical Chemistry; organisk farmaceutisk kemi;

    Sammanfattning : The complete series of Boc-protected C-4 mono- and difluoroallyl Phe-Gly dipeptidomimetics and their corresponding saturated derivatives has been synthesized. A mechanism that rationalizes the formation of the two isomeric allylic mono-fluorides from an allylic alcohol with diethylaminosulfur trifluoride (DAST) has been investigated. LÄS MER

  3. 12. Synthesis of indole and oxindole derivates incorporating pyrrolidino, pyrrolo or imidazolo moieties

    Författare :Stanley Rehn; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Isatin; three-component reaction; a-amino acid; azomethine ylide; pyrrolidino-3-spiro-3?-oxindole derivatives; 3-methyleneoxindole derivatives; pyrroloquinolone; TosMIC; ß-carboline; tosylimine; pyrrole; keto-enol tautomerism; indolopyran-2-one; imidazole; benzylimine; tetrahydroindole;

    Sammanfattning : The focus of this thesis is on the synthesis of oxindole- and indole-derivatives incorporating pyrrolidins, pyrroles or imidazoles moieties. Pyrrolidino-2-spiro-3'-oxindole derivatives have been prepared in high yielding three-component reactions between isatin, alpha-amino acid derivatives, and suitable dipolarophiles. LÄS MER

  4. 13. Micromechanism based material models for natural fiber composites

    Författare :Erik Marklund; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : The objective of Paper A was to develop a material model which includes all nonlinear viscoelastic phenomena observed in compressive tests on vinyl ester specimens using experimental data. The constitutive model developed by Schapery in the particular form previously presented by Megnis and Varna is used. LÄS MER

  5. 14. Chemical reactions in aluminium electrolytic capacitors

    Författare :Ildiko Szaraz; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

    Sammanfattning : Aluminium electrolytic capacitors are used in a wide variety of different applications. The aluminium electrolytic capacitor consists of two aluminium foils wound together and separated by special paper, which is impregnated with an electrolyte. LÄS MER

  7. 15. Recyclable High Performance Thermosets from Biobased Rigid Building Blocks

    Författare :Yunsheng Xu; Minna Hakkarainen; Karin Odelius; Youssef Habibi; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : The finite petroleum resources and increasing polymer waste have given rise to concerns associated with the origin and end of life management of polymer materials. Developing biobased and recyclable thermosets is an important and still underexplored part of this process, especially as thermosets also possess inherent recycling issues caused by their crosslinked structure. LÄS MER