Search for dissertations about: "Enallenes"

Showing result 1 - 5 of 8 swedish dissertations containing the word Enallenes.

2. 1. Palladium(II)-Catalyzed Oxidative Cyclization Strategies : Selective Formation of New C-C and C-N Bonds

   Author : Andreas K. Å. Persson; Jan-Erling Bäckvall; Matthew Sigman; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbocyclization; Palladium Catalysis; Oxidation; Cyclization; Enallenes; Aza-Enallenes; Dienallenes; Allenylation; Oxazolidinones; Biomimetic; Arylation; Borylation; Transmetallation; organisk kemi; Organic Chemistry;

   Abstract : The main focus of this thesis has been directed towards preparation and oxidative carbocyclization of en-, dien- and aza-enallenes.In the first part of this thesis, a stereoselective oxidative carbocyclization of dienallenes was realized. READ MORE

4. 2. Palladium(II)-Catalyzed Oxidative Carbocyclization : Stereoselective Formation of C–C and C–B Bonds

   Author : Tuo Jiang; Jan-Erling Bäckvall; Ross Widenhoefer; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbocyclization; Palladium catalysis; Oxidation; Enallenes; Enynes; Borylation; Arylation; Asymmetric Catalysis; Chiral Brønsted acids; Chiral anion; organisk kemi; Organic Chemistry;

   Abstract : Transition metal catalysis has emerged as one of the most versatile methods for the selective formation of carbon–carbon and carbon–heteroatom bonds. In particular, oxidative carbon–carbon bond forming reactions have been widely studied due to their atom economic feature. READ MORE

5. 3. Palladium(II)-catalyzed carbocyclizations. Moving from enallenes to aza-enallenes

   Author : Andreas Persson; Jan-Erling Bäckvall; Tue Petersen; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi;

   Abstract : .... READ MORE

6. 4. 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

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

   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

7. 5. Advances in Stereoselective Palladium(ΙΙ)-Catalyzed Oxidative Transformations of Allenes

   Author : Daniels Posevins; Jan-Erling Bäckvall; Troels Skrydstrup; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Synthesis; Palladium Catalysis; Allenes; Biomimetic; Carbocyclization; Borylation; Carbonylation; Oxidation; Heterogeneous; organisk kemi; Organic Chemistry;

   Abstract : Palladium(ΙΙ)-catalyzed carbon-carbon and carbon-heteroatom bond formation via selective C-H bond oxidation constitutes a step-economical and versatile approach towards complex target molecules. This thesis has been focused on the development of new selective palladium(ΙΙ)-catalyzed transformations of allenes under oxidative conditions catalyzed by either homogenous or heterogeneous palladium(ΙΙ) catalysts. READ MORE