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DOI: 10.1055/sos-SD-046-00090

Gandon, V.; Thorimbert, S.; Malacria, M.Science of Synthesis, (200946210.

Acyclic diynes react with metals such as titanium, zirconium, or nickel to give the corresponding bicyclometallacycles, which can be further manipulated to form various 1,2-bis(alkylidene)carbocycles or 1,2-bis(alkylidene)heterocycles.