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Tetra(tert-butyl)zirconium: Synthesis, Characterisation and Reaction with Carbon Dioxide by Peter Bougeard; John J. McCullough; Brian G. Sayer; Michael J. McGlinchey is a Chemistry article available to read on EtoBox.

What is Tetra(tert-butyl)zirconium: Synthesis, Characterisation and Reaction with Carbon Dioxide about?

The reaction of zirconium tetrachloride with tbutyllithium in diethyl ether at -78 'Cgives the very unstable molecule (t-Buj4Zr. This product was characterised by 13C and 91Zr NMR spectroscopy and could be partially stabilised as its bis-pyridine adduct. Treatment of (t-Bu)4Zr with carbon dioxide at -78 "C followed by acid hydrolysis gives predominantly the ketone, (t-Bu),CO. In contrast, other R4 Zr complexes (R = benzyl or allyl) under the same conditions yield equimolar amounts of the carbinol R3COH and carboxylic acid RCO, H almost quantitatively. The reaction of CO, with a mixture of R4 Zr complexes did not yield any cross-over products suggesting that an intramolecular mechanism is operative. A mechanistic scheme is proposed to account for all these observations.

Who reads Tetra(tert-butyl)zirconium: Synthesis, Characterisation and Reaction with Carbon Dioxide?

Author

Peter Bougeard; John J. McCullough; Brian G. Sayer; Michael J. McGlinchey

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

1984

Language

EN

Field

Chemistry (Physical Sciences)