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Synfacts 2008(2): 0146-0146  
DOI: 10.1055/s-2007-992426
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

20π Nonaromatic Porphycene

Contributor(s): Timothy M. Swager, Jeewoo Lim
T. Matsuo, K. Ito, N. Kanehisa, T. Hayashi*
Osaka University, Japan
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Publication History

Publication Date:
23 January 2008 (online)

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Significance

While they are well known in their role as building blocks in supramolecules, porphyrin and its derivatives are also interesting substrates for molecular electronics. In most cases, however, porphyrins and porphyrinoids are aromatic with 18π conjugation. 20π-Conjugated porphyrinoids readily undergo oxidation in air to establish 18π arrangement. The authors report on preparing the air-stable 20π-conjugated nonaromatic porphyrin derivative 1, which is a notable achievement.