Cycloheptyne–cobalt complexes via allylation of stabilized γ-carbonyl cations

Abstract

The Bu₂BOTf mediated reaction of stannylsilanes (5 and 9) with γ-methoxy-alkynoate and -alkynone hexacarbonyldicobalt complexes (8), followed by conversion of the organic carbonyl into an acetate and a BF₃·OEt₂ mediated intramolecular reaction, affords cycloheptenyne hexacarbonyldicobalt complexes (13 and 15).

References

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