ChemInform Abstract: Thermal Valence Isomerization of Hemi-Dewar Type Isomers of (6)(1,4) Naphthaleno- and (6)(1,4)Anthracenophanes

8-Methoxycarbonyl substituted [6](1,4)naphthaleno- and [6](1,4)anthracenophanes were prepared by the thermal valence isomerization of the corresponding hemi-Dewar type valence isomers. The rates of their isomerization were remarkably faster than those of the Dewar isomer of [6]paracyclophanes.