Search for dissertations about: "Cross-coupling"
Showing result 1 - 5 of 61 swedish dissertations containing the word Cross-coupling.
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1. Iron or Copper? - Method Development and Mechanistic Studies on Cross-Coupling Reactions
Abstract : The area of catalysis has had an immeasurable impact on modern society. This has been acknowledged through several Nobel prizes during the 20th century ranging from Haber (1918) for the synthesis of ammonia to Richard F. Heck, Ei-ichi Negishi, and Akira Suzuki (2010) for palladium-catalyzed cross-coupling reactions. READ MORE
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2. Copper- and nickel-catalyzed cross-coupling reactions : synthesis of 2-substituted 1,3-dienes and mechanistic and synthetic studies of the copper-mediated allylic substitution reaction
Abstract : .... READ MORE
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3. Olefins from carbonyls : Development of new phosphorus-based cross-coupling reactions
Abstract : Olefins, compounds containing C=C double bonds, are omnipresent in nature and serve as useful starting materials for various chemical modifications. Olefins are of crucial importance in Medicinal Chemistry and are also present in essential objects like dyes, polymers and plastics. READ MORE
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4. New Reactions with Allyl- and Allenylboron Reagents : Transition-Metal-Catalyzed and Transition-Metal-Free Carbon-Carbon Bond Formation Processes
Abstract : Organoboron compounds have been widely used in carbon-carbon bond formation reactions in organic synthesis and catalysis. This thesis is focused on cross-coupling reactions of allyl-, allenylboronic acids and their ester derivatives via transition metal catalysis or transition-metal-free processes. READ MORE
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5. Iron catalyzed C-C coupling reactions - mechanistic investigations
Abstract : The mechanism of the iron catalyzed cross coupling of aryl electrophiles with alkyl Grignard reagents was studied. The reaction proceeds via a rate-limiting oxidative addition of the aryl halide to an Fe(I) complex generated in situ. A transmetalation from an aryl Grignard reagent occurs either before or after the oxidative addition. READ MORE