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AuthorBuck, Stefandc.contributor.author
Date of accession2016-03-15T06:23:42Zdc.date.accessioned
Available in OPARU since2016-03-15T06:23:42Zdc.date.available
Year of creation2011dc.date.created
AbstractRuthenium(I) complexes are a less costly alternative to the established rhodium catalysts in carbene transfer reactions. This type of ruthenium catalysts shows a particularly high Z-selective cyclopropanation of trisubstituted alkenes with diazoacetates. In this work, cyclic N-sulfonyl-carboxamido ligands, like saccharin and derivatives, acesulfame and a sulfahydantoin were synthesized and employed to create two-core Ru(I) complexes (like [Ru2(CO)4(µ-L)2]). As a possible solution for the problem of relative facile isomerization (head-head or head-tail constitution) of the complexes, two of the saccharin molecules were connected by a terphenyl bridge. To study the selectivity and activity of these complexes in cyclopropanation reactions, they were used as catalysts, for example in the reaction between an olefin (styrene, cyclohexene, 2-methyl-2-butene) and methyl diazoacetate. In spite of the isomerization of these complexes, a certain stereoselectivity was observable. This is expressed in higher yields of Z-cyclopropanes in case of catalysts with initially head-tail arranged ligands (especially with 6-bromosaccharin as ligand).dc.description.abstract
Languagededc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 01.10.2008)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v2dc.rights.uri
KeywordAcesulfamedc.subject
KeywordBridged liganddc.subject
KeywordCarbene transfer reactiondc.subject
KeywordComplexdc.subject
KeywordCyclopropanationdc.subject
KeywordHead-headdc.subject
KeywordHead-taildc.subject
KeywordLigand isomerizationdc.subject
KeywordSulfahydantoindc.subject
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHCatalysisdc.subject.lcsh
LCSHCyclopropanedc.subject.lcsh
LCSHDiazo compounddc.subject.lcsh
LCSHSaccharindc.subject.lcsh
LCSHTerphenyldc.subject.lcsh
LCSHRutheniumdc.subject.lcsh
TitleRuthenium-Sulfonamid-Komplexe als Katalysatoren für Carbenübertragungsreaktionendc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-1900dc.identifier.doi
PPN656520302dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-75806dc.identifier.urn
GNDRhodiumdc.subject.gnd
GNDRutheniumdc.subject.gnd
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
Date of activation2011-03-24T13:51:04Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 13.998; W-H 12.463uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS-ID7580uulm.vtsID
CategoryPublikationenuulm.category
University Bibliographyjauulm.unibibliographie


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