Sökning: "iodine chemistry"

Visar resultat 1 - 5 av 61 avhandlingar innehållade orden iodine chemistry.

  1. 1. Tellurium interaction with surfaces in the containment and sea-salt residue

    Författare :Fredrik Espegren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; server nuclear accident; Keywords: tellurium; seawater; deposition; chemistry; containment;

    Sammanfattning : In the event of a nuclear accident, the release of radionuclides is always a concern. The extent of such releases is affected by several factors, for example type of atmosphere, temperature, and what structural materials are present during the accident. LÄS MER

  3. 2. Synthetic and Mechanistic Studies with Iodine(III) Reagents

    Författare :Ester Maria Di Tommaso; Berit Olofsson; Marcos Suero; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hypervalent iodine chemistry; organic synthesis; mechanistic studies; DFT; photocatalysis; Organic Chemistry; organisk kemi;

    Sammanfattning : This thesis describes the development of metal-free transformations and mechanistic studies on the reactivity of two classes of hypervalent iodine reagents: diaryliodonium salts and vinylbenziodoxolones (VBX). Recently, they have been recognized as valuable synthetic reagents with broad applicability in organic synthesis. LÄS MER

  4. 3. Some New Methods in Sialic Acid Chemistry

    Författare :Teddy Ercegovic; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; thioglycoside promoter; ganglioside; Tumor-associated antigen; lactam; lactone; sialic acid; N-acetylneuraminic acid; Neu5Ac; sialyl donor; auxiliary group; 3- S -phenylthio; bis-sialic acid lactam; 3- S -phenylseleno; silver trifluoromethanesulfonate; iodine monochloride; Organic chemistry; Organisk kemi;

    Sammanfattning : Gangliosides (G) are sialic acid-containing cell surface glycosphingolipids capable of forming lactones, i.e. inner esters. Some gangliosides are tumor-associated antigens, and they may serve as immunogens in their lactone form, where the latter is comparatively more abundant on the surface of malignant cells. LÄS MER

  5. 4. Development and Applications of Hypervalent Iodine Compounds : Powerful Arylation and Oxidation Reagents

    Författare :Nazli Jalalian; Berit Olofsson; Viktor V. Zhdankin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hypervalent iodine compounds; diaryliodonium salts; oxidation; Koser s reagent; arylation; phenols; diaryl ethers; chemoselectivity; organisk kemi; Organic Chemistry;

    Sammanfattning : The first part of this thesis describes the efficient synthesis of several hypervalent iodine(III) compounds. Electron-rich diaryliodonium salts have been synthesized in a one-pot procedure, employing mCPBA as the oxidant. Both symmetric and unsymmetric diaryliodonium tosylates can be isolated in high yields. LÄS MER

  7. 5. Bifunctionalization of Small Organic Molecules Based on Fluorine Incorporation

    Författare :Marvin Lübcke; Kálmán Szabó; Ryan Gilmour; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluorination; fluorocyclization; fluorine chemistry; trifluoromethylthiolation; rhodium-catalysis; organocatalysis; asymmetric synthesis; hypervalent iodine; multicomponent reaction; bifunctionalization; diazo compounds; organisk kemi; Organic Chemistry;

    Sammanfattning : The dissertation work that is summarized in this thesis describes novel syntheses of organofluorine compounds with a broad coverage of different fluorine-containing motifs.Chapter 2.1 covers works on the exploration of new trifluoromethylthiolating reactions of diazocarbonyl compounds. LÄS MER