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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2001-3-22
pubmed:abstractText
Reactions of NH-enaminones 2 with [2-(1-cycloalkenyl)ethynyl]carbene complexes 7 (M=W, Cr) gave tetrahydropentalenes, tetrahydroindenes, and hexahydroazulenes 8a-i, in which the NH-enaminone moiety is attached to the cyclopentadiene unit. The reaction involved formation of (3E)-1-metalla-1,3,5-hexatriene intermediates, which underwent pi cyclization faster than 3E/3Z isomerization. Tungsten complexes 12 and 13 were characterized as reaction intermediates. Compounds 8 are potentially bidentate ligands with respect to coordination both of the cyclopentadienyl and the enaminone moieties.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Feb
pubmed:issn
0947-6539
pubmed:author
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
711-20
pubmed:dateRevised
2009-8-4
pubmed:year
2001
pubmed:articleTitle
Enaminone substitutents attached to cyclopentadienes: 3E/3Z stereochemistry of 1-metalla-1,3,5-hexatriene intermediates (M = Cr, W) as a functional criterion for the formation of cyclopentadienes and six-membered heterocycles, respectively.
pubmed:affiliation
Organisch-Chemisches Institut der Universität Münster, Germany. aumannr@uni-muenster.de
pubmed:publicationType
Journal Article