Search for dissertations about: "alkyne"

Showing result 1 - 5 of 26 swedish dissertations containing the word alkyne.

  2. 1. Synthesis of Nitrogen Heterocycles via 1,3-Dipolar Cycloadditions - Method Development and Applications

    Author : Johan Johansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 2D NOESY; alkyne; 3-dipolar cycloaddition; azomethine ylide; 1; CNTs; azide; sequential one-pot; SEM EDS; microwave heating; RuAAC; CuAAC;

    Abstract : Because of the diverse properties displayed by nitrogen heterocycles, they are one of the most commonly used structural elements in drug discovery. Due to this variation in properties, however, the chemistry and synthetic pathway to each heterocycle is unique. READ MORE

  4. 2. π-complexes of terminal alkynes and alkenes with copper(I) : synthesis and structural characterization

    Author : Katarina Brantin; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; olefin; alkene; crystal structure; alkyne; synthesis; acetyne; infrared; pi-complex; copper I ;

    Abstract : .... READ MORE

  5. 3. Phosphorus Centers in π-conjugated Systems

    Author : Elisabet Öberg; Sascha Ott; Koop Lammertsma; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphorus; phosphaalkene; phosphole; alkyne; π-conjugation; molecular electronics; Kemi; Chemistry;

    Abstract : Single-molecular electronics and organic material electronics are expanding research fields that ultimately aim for a vast variety of different applications, ranging from organic light-emitting diodes, to novel ways to improve the performance and decrease the size of electronics components. To achieve these goals, research has to be focused both on the development of functional molecules, but also on device fabrication. READ MORE

  6. 4. Stereoselective Nucleophilic Additions to α-Amino Aldehydes: Application to Natural Product Synthesis

    Author : Per Restorp; Peter Somfai; Timothy J. Donohoe; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Stereoselective synthesis; Substrate-control; α-Amino aldehydes; Mukaiyama aldol; Allylsilanes; [3 2]-Annulation; -Alexine; DGDP; Vinyl epoxides; Regioselectivity; Alkyne nucleophiles; Organic chemistry; Organisk kemi;

    Abstract : This thesis deals with the development and application of new synthetic methodology for stereo- or regioselective construction of carbon-carbon bonds in organic synthesis. The first part of this thesis describes the development of a divergent protocol for stereoselective synthesis of chiral aminodiols by employing Mukaiyama aldol additions to syn- and anti-α-amino-β-silyloxy aldehydes. READ MORE

  7. 5. Photochemical Ligation Techniques for Carbohydrate Biosensors and Protein Interaction Studies

    Author : Oscar Norberg; Olof Ramström; Stéphane Vincent; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Biosensors; CuAAC; Photochemistry; Thiol-ene yne; Perfluorophenylazide PFPA ; Lectins; Molecular recognition; Quartz crystal microbalance QCM ; Surface plasmon resonance SPR ;

    Abstract : This thesis concerns the development of surface ligation techniques for the preparation of carbohydrate biosensors. Several methodologies were developed based on efficient photochemical insertion reactions which quickly functionalize polymeric materials, with either carbohydrates or functional groups such as alkynes or alkenes. READ MORE