Cyclic cross-conjugated hydrocarbons having an inserted p-quinonoid ring. Part 8. Quinarenes containing naphthalene residues
Abstract
2″,5″-Dicyano-3″,4″-diphenyl derivatives (6) and (7) of 1-cycloheptatrienylidene-4-cyclopentadienylidene-1,4-dihydronaphthalene and 1-cycloheptatrienylidene-5-cyclopentadienylidene-1,5-dihydronaphthalene have been synthesized.