Palladium-catalyzed cycloaddition reactions of 1,8-diethynylnaphthalene
derivatives with o-diiodoarenes take
place to generate the corresponding benzo[k]fluoranthene-based
linear acenes in moderate to good yields. In addition, 1-ethynyl-8-iodonaphthalenes
undergo palladium-catalyzed cyclodimerizations to produce zethrenes.
Finally, in the presence of a catalytic system comprised of [NiBr2(dppe)/Zn],
1-ethynyl-8-iodonaphthalenes reacts with nitriles and 2-butyne to
form the respective pyrroloarenes and pyrene.
arenes - cross-coupling - cycloadditon - nickel - palladium - polycycles