KOPS - Das Institutionelle Repositorium der Universität Konstanz

Synthesis of azetidinylidene complexes from [(CO)5M(CH2Cl2)], phenylacetylene and imines and oxidative decomplexation to give β-lactams

Synthesis of azetidinylidene complexes from [(CO)5M(CH2Cl2)], phenylacetylene and imines and oxidative decomplexation to give β-lactams

Zitieren

Dateien zu dieser Ressource

Dateien Größe Format Anzeige

Zu diesem Dokument gibt es keine Dateien.

ABD-ELZAHER, Mokhles M., Helmut FISCHER, 1999. Synthesis of azetidinylidene complexes from [(CO)5M(CH2Cl2)], phenylacetylene and imines and oxidative decomplexation to give β-lactams. In: Journal of Organometallic Chemistry. 588(2), pp. 235-241. ISSN 0022-328X. eISSN 1872-8561

@article{Abd-Elzaher1999Synth-23036, title={Synthesis of azetidinylidene complexes from [(CO)5M(CH2Cl2)], phenylacetylene and imines and oxidative decomplexation to give β-lactams}, year={1999}, doi={10.1016/S0022-328X(99)00381-2}, number={2}, volume={588}, issn={0022-328X}, journal={Journal of Organometallic Chemistry}, pages={235--241}, author={Abd-Elzaher, Mokhles M. and Fischer, Helmut} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/23036"> <dcterms:title>Synthesis of azetidinylidene complexes from [(CO)5M(CH2Cl2)], phenylacetylene and imines and oxidative decomplexation to give β-lactams</dcterms:title> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:creator>Fischer, Helmut</dc:creator> <dc:creator>Abd-Elzaher, Mokhles M.</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/23036"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-12T07:15:17Z</dcterms:available> <dcterms:abstract xml:lang="eng">Photolysis of [M(CO)6] in CH2Cl2 gives [(CO)5M(CH2Cl2)]. Substitution of phenylacetylene for CH2Cl2 produces the thermolabile phenylacetylene complexes [(CO)5M(HCCPh)] [M=Cr (1), Mo (2), W (3)]. Addition of N-alkyl benzylideneimines, RNC(Ph)H, to solutions of 1–3 affords the 2-azetidin-1-ylidene complexes [(CO)5MView the MathML source(Ph)H] [M=Cr, Mo, W; R=Et, i-Pr]. The reaction presumably proceeds by cycloaddition of the imines to the CC bond of vinylidene complexes resulting from tautomerization of the alkyne complexes. The cycloaddition is highly stereoselective. Predominantly, the syn isomer is obtained (syn/anti≥9). The reaction of 3 with dialkylcarbodimides, RNCNR (R=c-Hex, i-Pr), yields 3-imino-2-azetidin-1-ylidene complexes, [(CO)5WView the MathML source(Ph)H]. By oxidative cleavage of the CrC bond in [(CO)5CrView the MathML source(Ph)H] the corresponding β-lactams are obtained in high yields.</dcterms:abstract> <dcterms:issued>1999</dcterms:issued> <dc:contributor>Abd-Elzaher, Mokhles M.</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Fischer, Helmut</dc:contributor> <dcterms:bibliographicCitation>Journal of Organometallic Chemistry ; 588 (1999), 2. - S. 235-241</dcterms:bibliographicCitation> <dc:rights>deposit-license</dc:rights> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-06-12T07:15:17Z</dc:date> </rdf:Description> </rdf:RDF>

Das Dokument erscheint in:

KOPS Suche


Stöbern

Mein Benutzerkonto