Stereospecific synthesis of a metallo-enolate: E-[zr{oc(sime3)=char}cl(ŋ-c5h5)2] (structurally characterised) via carbonylation of [zr{ch(sime3)ar}cl(ŋ-c5h5)2] (ar = 9-anthryl)

Michael F. Lappert, Colin L. Raston, Lutz M. Engelhardt, Allan H. White

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34 Citations (Scopus)


Treatment of Li{CH(SiMe3)Ar}(tmeda) (Ar = 9-anthryl, tmeda = Me2N[CH2]2NMe2) with zirconocene(1v) chloride in tetrahydrofuran at 20 °C affords [Zr{CH(SiMe3)Ar}CI(ŋ-C5H5)2],which rapidly reacts with carbon monoxide (Pco 1 atm, 20 °C) in toluene to afford exclusively the E-metallo-enolate [Zr{OC(SiMe3)=CHAr}CI(ŋ-C5H5)2], having Zr-0 1.950(4) Å and < Zr-O-C 157.7(3)°.

Original languageEnglish
Pages (from-to)521-522
Number of pages2
JournalJournal of the Chemical Society - Series Chemical Communications
Issue number8
Publication statusPublished - 15 Apr 1985
Externally publishedYes


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