Search for dissertations about: "Allenes"

Showing result 1 - 5 of 9 swedish dissertations containing the word Allenes.

  1. 1. Palladium-Catalyzed Carbocyclizations of Allenes with Unsaturated Hydrocarbons

    University dissertation from Stockholm : Institutionen för organisk kemi

    Author : Johan Franzén; Stockholms universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palladium-catalysis; Allenes; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : Palladium-catalyzed reactions of unsaturated hydrocarbons are important processes in organic chemistry especially for the generation of ring systems. This thesis describes the development and mechanistic studies of carbocyclization reactions of allenes with olefins, allyls or 1,3-dienes catalyzed by palladium(0)- and palladium(II)-complexes. READ MORE

  2. 2. Studies on Palladium-Catalyzed Carbocyclizations of Allene-Substituted Olefins and 1,3-Dienes

    University dissertation from Stockholm : Institutionen för organisk kemi

    Author : Katja Närhi; Stockholms universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organometallic Chemistry; Homogenous Catalysis; Palladium; Allenes; C-C bond formation; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : This thesis describes the development and mechanistic studies of carbocyclization reactions of allene-substituted olefins and 1,3-dienes, catalyzed by palladium(0) and palladium(II). These reactions results in the formation of [n,3,0] bicyclic systems (n = 3-5) with high stereoselectivity and in good to excellent yields. READ MORE

  3. 3. Catalytic Stereoselective Formation of C–O, C–C and C–B Bonds A Voyage from Asymmetric Reactions Enabled by Lipases to Stereoselective Palladium-Catalyzed Oxidative Transformations of Enallenes

    University dissertation from Stockholm : Department of Organic Chemistry, Stockholm University

    Author : Bin Yang; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Synthesis; Enzymatic kinetic resolution; Palladium; Allenes; Oxidative Transformations; Ruthenium; Organic Chemistry; organisk kemi;

    Abstract : This thesis has been focused on enzymatic kinetic resolutions and stereoselective oxidative transformations of enallenes catalyzed by PdII.In the first part of the thesis, a detailed discussion on Candida antarctica lipase B (CALB)-catalyzed kinetic resolution (KR) of δ-functionalized alkan-2-acetates is shown. READ MORE

  4. 4. Synthetic and mechanistic studies on allenes and acetylenes

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Lars-Inge Olsson; Uppsala universitet.; [1979]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PHARMACY; FARMACI;

    Abstract : .... READ MORE

  5. 5. Palladium(II)-Catalyzed Reactions of Allenes with Lithium Bromide and Cyclization of α-Amino Allenes to Pyrrolines

    University dissertation from Stockholm : Institutionen för organisk kemi

    Author : Attila Horváth; Stockholms universitet.; [2004]
    Keywords : Palladium; allene; pyrroline; palladium II -catalysis;

    Abstract : This thesis is based on three novel palladium(II)-catalyzed reactions of allenes with lithium bromide and a bromonium ion induced cyclization of allenyl amides to pyrrolines. In Paper I a 1,2-functionalization of allenes is presented where bromide adds as a first nucleophile followed by intramolecular attack by an oxygen or nitrogen nucleophile. READ MORE