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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Telomerization and dimerization of isoprene by in situ generated palladium-carbene catalysts
Journal of Organometallic Chemistry, Volume 692, No. 21, Year 2007
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Description
The palladium-catalyzed telomerization of isoprene with methanol and dimerization of isoprene have been studied in presence of in situ generated palladium-carbene catalysts. Unprecedented catalyst productivity has been observed for these two reactions. A selectivity switch from the telomer to the dimer product occurred by using different substituted carbene ligands. Among the imidazolium salts tested 1,3-dimesitylimidazolium mesylate (1), 1,3-dimesityl-4,5-dihydroimidazolium chloride (3) gave the best yields for telomerization reaction whereas 1,3-bis-(2,6-diisopropylphenyl)-4,5-dihydroimidazolium tetrafluoroborate (5) and 1,3-bis-(2,6-diisopropylphenyl)-4,5-dimethyl-4,5-dihydroimidazolium chloride (9) form dimers in high yield and good selectivity. © 2007 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Jackstell, Ralf
Germany, Rostock
Leibniz Institute for Catalysis
Grotevendt, Anne G.D.
Germany, Rostock
Leibniz Institute for Catalysis
Michalik, Dirk
Germany, Rostock
Leibniz Institute for Catalysis
El Firdoussi, Larbi
Morocco, Marakech
Faculté Des Sciences Semlalia
Beller, Matthias
Germany, Rostock
Leibniz Institute for Catalysis
Statistics
Citations: 35
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1016/j.jorganchem.2007.06.039
ISSN:
0022328X