Search for dissertations about: "Hydride shift"

Found 5 swedish dissertations containing the words Hydride shift.

  2. 1. Catalytic Methods to Convert Allylic Substrates through Hydride and Proton Shifts : Transition Metal-Catalyzed and Organocatalyzed Approaches

    Author : Samuel Martinez-Erro; Belén Martín-Matute; Franziska Schoenebeck; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Allylic substrates; Iridium catalysis; Base catalysis; Method development; Isomerization; Hydride shift; Proton shift; Mechanistic studies; organisk kemi; Organic Chemistry;

    Abstract : The present thesis describes the development of new catalytic protocols to transform allylic substrates into a wide variety of versatile carbonyl and vinyl organic compounds. All procedures that are described in this work have in common the existence of one or more hydrogen shifts as key steps in the mechanism of the reactions. READ MORE

  4. 2. A Novel Rearrangement of Allyl Benzyl Ethers and Aspects on the Glyoxylate Ene Reaction

    Author : Johan Wennerberg; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; liverwort; natural product synthesis; phenyl butyraldehydes; allyl benzyl ethers; 2-hydride migration; 1; 4-rearrangement; regio selectivity; shape selectivity; zeolite; Ene reaction; Taxol A-ring; naphthalene derivatives; dihydronaphthalenes; Organic chemistry; Organisk kemi;

    Abstract : This thesis describes an improvement of the glyoxylate ene reaction by using siamyl glyoxaylate and a development of the novel rearrangement of allyl benzyl ethers. The glyoxylate ene reaction was used as a key reaction in a 8-step synthesis of a Taxol A-ring building block. READ MORE

  5. 3. Models of NADH with C2 and D2 Symmetry

    Author : Klas Skog; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : A novel supramolecular approach to the design of NADH models is presented in this dissertation. The models can be divided into two types, C2 symmetric and D2 symmetric macrocyclic structures. The C2 symmetric models are made from a chiral C2 symmetric unit, two dihydronicotinamide units and a phenylene spacer, to form a macrocyclic structure. READ MORE

  6. 4. The dynamic behavior of the NiMH battery – Creating a versatile NiMH battery model

    Author : Jenny Börjesson Axén; Göran Lindbergh; Henrik Ekström; Erika Widenkvist Zetterström; Paul Albertus; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NiMH batteries; Battery Modeling; OCV hysteresis; NiMH gas phase; P2D model; NiMH batterier; Batterimodellering; OCV hysteres; NiMH gasfas; P2D modell; Chemical Engineering; Kemiteknik;

    Abstract : To facilitate the shift from fossil to renewable energy sources, energy storage is needed to cope with the intermittent nature of technologies such as solar, wind, and wave power. One storage alternative is battery-based stationary energy storage. READ MORE

  7. 5. Identification and characterization of novel mammalian alcohol dehydrogenases

    Author : Patrik Strömberg; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The vertebrate medium chain alcohol dehydrogenases are dimeric zinc metalloenzymes that catalyze the reversible oxidation/reduction of alcohols/aldehydes using NAD+/NADH as coenzyme. In mammals, six classes of ADH have been defined (ADH1-ADH6) whereof five have been identified in humans. READ MORE