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Please login to access the full content or check if you have access via Variation 2: Zirconacene-Derivative-Promoted Cyclization of Diynes

DOI: 10.1055/sos-SD-046-00090

Gandon, V.; Thorimbert, S.; Malacria, M.Science of Synthesis, (200946211.

In a similar type of reaction to that undergone by simple alkynes (see Section acyclic diynes 137 react with zirconium(II) sources Zr(Cp)2 to produce bicyclic zirconacyclopentadienes 138, which may be demetalated by treatment with hydrochloric acid to afford E,E-exocyclic cycloalkadienes 139, containing four- to seven-membered rings, in good yields (Scheme 46).[‌120‌]

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