Sökning: "azides"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet azides.

  1. 1. Organic Azides : Functional Molecules and Materials

    Författare :Giampiero Proietti; Peter Dinér; Per I. Arvidsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; perfluorinated Aromatic Azide; Photoactivatable; fluorophores; aggregation-induced emission; sulfonimidamides; sulfoximes; chiral auxilary; organogel; azides reduction; Ni-B; Kemi; Chemistry;

    Sammanfattning : The work presented in this thesis stems from the chemistry of the azido group, and more specifically from the unique reactivity of perfluorinated aromatic azides and how to use this reactivity to access new types of molecules to enable new applications in asymmetric synthesis and materials.In the first section of this thesis, a photoactivatable fluorescence probe is presented, where the non-luminescent azide was activated via a UV-light-promoted intramolecular N–H insertion reaction forming a fluorescence emitter. LÄS MER

  3. 2. Perfluroaryl azides : Reactivities, Unique Reactions and their Applications in the Synthesis of Theranostic Agents

    Författare :Sheng Xie; Mingdi Yan; Olof Ramström; Stefan Bräse; KTH; []
    Nyckelord :Click Chemistry; Dipolar Cycloaddition; Enamine; Triazoline; Amidine; Aggregation-induced emission; pure nanodrugs; aryl amide; thioacid azide reaction; nucleophilic aromatic substitution; azide-masked fluorophore; nitrene insertion; Kemi; Chemistry;

    Sammanfattning : The work centersaround perfluoroaryl azides (PFAAs), and theirability to undergo certain fast and robusttransformations. The chemistry was furtherappliedfor biomedical applications.The first section focuses on the azide-aldehyde-amine cycloaddition using PFAAs. LÄS MER

  4. 3. Multicomponent Reactions in 11C/12C Chemistry : – Targeting the Angiotensin II Subtype 2 Receptor

    Författare :Marc Stevens; Luke Odell; Mats Larhed; Gunnar Antoni; Sergio Estrada; Ola Åberg; Neil Vasdev; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbonylation; positron emission tomography; multicomponent reactions; AT2R; 3; 4-dihydroquinazolinone; sulfonyl azides; Farmaceutisk vetenskap; Pharmaceutical Science;

    Sammanfattning : Section 1 of this thesis contains an introduction to method development in organic synthesis, multicomponent reactions, sulfonyl azides, tracer development in 11C chemistry and the biological target.Section 2 describes the use of sulfonyl azides in carbonylative chemistry. Paper I covers development of a diazotransfer protocol. LÄS MER

  5. 4. Development of Lewis acid mediated stereoselective synthesis of nitrogen containing heterocycles

    Författare :Åsa Sjöholm Timén; KTH; []
    Nyckelord :organic chemistry;

    Sammanfattning : This thesis deals with the development of syntheticmethodologies for the preparation of enantio- anddiastereomerically enriched nitrogen-containingheterocycles.Asymmetric Lewis acid mediated Diels-Alder reactions with2H-azirines as dienophiles have been studied. LÄS MER

  7. 5. Macrocyclic Carbohydrate/Amino Acid Hybrid Molecules - Synthesis and Evaluation as Artificial Receptors

    Författare :Johan Billing; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3-dipolar cycloaddition; 3-triazoles; 2; 1; molecular recognition; artificial receptors; sugar amino acids; cyclic peptides; macrocycles; Organic chemistry; Organisk kemi;

    Sammanfattning : Methods were developed for the synthesis of three different types of macrocyclic carbohydrate/amino acid hybrid molecules. In the synthesis of the first type of macrocycles, a glucosamine derivative was oxidized at C6 and the obtained sugar amino acid was coupled to tripeptides. LÄS MER