Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... 2-Bromo-1-ethenyl-3,4-dihydronaphthalene (1) is subjected to palladium(0) catalysed coupling to a series of vinyl and aryl iodides via a bromozinc intermediate; the products when heated undergo 6π-electrocyclic ring closure. ... Bromodiene (A) is coupled with unsaturated iodides in ...