Reversible acyl-keten-umwandlung

Fritz R. Kreißl, Hans Keller, Wolfgang Schütt

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Carbonyl(bistrifluoracetato)(η5-cyclopentadienyl)(η2-methylbenzylacyl)tungsten (5) reacts with 1,8-diazabicyclo[5.4.0]undecen (DBU) under deprotonation to give the anionic ketenyl complex [η5-C5H5(CO)(CF3COO)2W(OCC(H)C6H4CH3][DBUH] (3). Subsequent treatment of 3 with trifluoroacetic acid trimethyloxonium tetrafluoroborate or methanol affords the original acyl complex (5), its methyl substituted derivative (6) or an ester (7).

Original languageGerman
Pages (from-to)75-80
Number of pages6
JournalJournal of Organometallic Chemistry
Issue number1
StatePublished - 1 Dec 1992

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