title: Synthesis of porphyrin dimers fused with a benzene unit.
abstract: Bicyclo[2.2.2]octadiene-connected pyrrolo-porphyrins have been prepared by an inverse-type [3+1] porphyrin synthesis of a bicyclo[2.2.2]octadiene-fused dipyrrole with a tripyrrane dicarbaldehyde. Another [3+1] porphyrin synthesis of pyrrole-connected porphyrins with the same or other tripyrrane dicarbaldehydes gave bicyclo[2.2.2]octadiene-bridged diporphyrins, the central metals and/or peripheral substituents of which were different. Thermal decomposition of the bicyclo[2.2.2]octadiene skeleton to a benzene moiety gave pi-system-fused porphyrin dimers in a highly pure form.
authors.affiliation: Division of Synthesis and Analysis, Department of Molecular Science, Integrated Center for Sciences (INCS), Ehime University, Matsuyama 790-8577, Japan. uno@dpc.ehime-u.ac.jp
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Uno
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Nakamoto
authors.forename: Kenji
authors.initials: K
authors.lastname: Kuroki
authors.forename: Akiko
authors.initials: A
authors.lastname: Fujimoto
authors.forename: Noboru
authors.initials: N
authors.lastname: Ono