Various 2-bromododeca-1,11-dien-6-ynes 1a,b,8 and trans- or cis-10a,b when subjected to Heck reaction conditions, cleanly undergo palladium-catalysed biscyclizations followed by an electrocyclic rearrangement to form tricyclic cyclohexadienes 5a,b, 9 and cis- or trans-11a,b as sole products (7 examples).
F. E. Meyer, J. Brandenburg, P. J. Parsons and A. de Meijere, J. Chem. Soc., Chem. Commun., 1992, 390 DOI: 10.1039/C39920000390
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