The present invention relates to polyacene derivatives represented by general formula (I) below:
1
(wherein R
1
to R
10
, etc. each represents hydrogen atom, hydrocarbon group, or an alkoxy group; A
1
and A
2
are hydrogen atom, a halogen atom, a hydrocarbon group, an alkoxy group, cyano group, etc.; n is an integer of not less than 1; R
6
and R
7
may be linked to each other to form a ring); and a process for preparing the polyacene derivatives from polyhydro compounds as well as electrically conductive materials comprising the polyacene derivatives. According to the process for preparing the polyacene derivatives of the present invention, optional substituents can be introduced into any carbon atoms of the polyacene, and the number of aromatic rings can be increased.
prepared from diiodobutadienes reacted with diiodobenzene or diiodonaphthalene to afford substituted naphthalene, anthracene, dihydronaphthacene, and dihydropentacene derivatives in the presence of CuCl and DMPU. Dihydronaphthacene and dihydropentacene derivatives were converted into the corresponding naphthacene and pentacene derivatives.
A new and efficient palladium-catalyzed reaction of o-diiodoarenes with internal alkynes produces naphthalenes or anthracenes in good to excellent yields. This procedure provides a simple, catalytic, and straightforward ring-extension method for constructing substituted polycyclic aromatic compounds.