Sökning: "Acetals"
Visar resultat 11 - 15 av 22 avhandlingar innehållade ordet Acetals.
11. Photocatalysis beyond conventional precious metal complexes
Sammanfattning : Precious metals, e.g. Ru and Ir, are expensive, scarce and non-renewable resources. As oppose to many renewable resources, these cannot be deliberately produced wherever one wishes. LÄS MER
12. Synthesis of oligosaccharides for structural, conformational and molecular recognition investigations
Sammanfattning : Carbohydrates are involved cell-cell interaction. Synthesis of small and medium sized oligosaccharides is important to gain more understanding about the their physical properties that are crucial for their action in molecular recognition events. LÄS MER
13. New Methodologies in Organic Chemistry: Applications to the Synthesis of α-Amino Acids and Natural Products
Sammanfattning : This thesis deals with the development and application of new synthetic methodology in organic chemistry. The first part describes the development of a new protocol for the synthesis of 3-pyrrolines by means of a microwave-assisted ring-expansion reaction of 2-vinylaziridines. LÄS MER
14. Highly enantioselective synthesis of lactam and sugar derivatives by chiral aminocatalysis and merging with transition metal catalysis
Sammanfattning : This thesis presented novel methodologies for enantioselectivesynthesis of highly functionalized lactam and sugar derivatives.Asymmetric organocatalysis, cooperative dual catalysis and one-pot multicomponent reaction strategies were applied for the construction of continuous and quaternary stereogenic center. LÄS MER
15. Bifunctionalization of Small Organic Molecules Based on Fluorine Incorporation
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
