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Paper | Special issue | Vol 67, No. 1, 2006, pp.255-267
Published online, 12th August, 2005
DOI: 10.3987/COM-05-S(T)23
A New Synthesis of Acenaphthobenzoporphyrin and Fluoranthobenzoporphyrin

Tetsuo Okujima,* Naoki Komobuchi, Hidemitsu Uno, and Noboru Ono*

*Department of Chemistry, Faculty of Science, Ehime University, 3 Bunkyo-cho, Matsuyama, 790-8577 Ehime, Japan

Abstract

Benzoporphyrins fused with acenaphthylene or fluoranthene (3) and (4) were prepared by the condensation of bicyclo[2.2.2]octadiene(BCOD)-fused tripyrrane (5) with appropriate pyrrole dialdehydes (13) or (14) and the subsequent retro Diels-Alder reaction. The absorptions of these new porphyrins were very intense at both Soret and Q bands, which might be useful as organic dyes for solar cells.