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Communication | Regular issue | Vol 48, No. 5, 1998, pp.861-864
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8113
Synthesis and Properties of Porphyrin-linked Indolizine

Kiyoshi Matsumoto,* Akira Ogasawara, Shinya Kimura, Naoto Hayashi, and Takahisa Machiguchi

*Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan

Abstract

The synthesis of porphyrin-linked indolizine has been achieved for the first time in a simple process from the reaction between a 5-formylindolizine (8) and dipyrrolomethane (10) giving the desired 1,7-bisindolidinoporphyrin (12). The electronic effect of the heterocyclic nuclei (12) is prominently observed in the Soret band of the UV — VIS spectrum. Temperature-dependence 1H NMR analysis of 12 suggests the existence of an association of 12 causing restricted rotation around the bond between indolizine and porphyrin.