Synthesis and Catalytic Activities of Porphyrin-Based PCP Pincer Complexes

Authors

  • Keisuke Fujimoto,

    1. Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)
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  • Tomoki Yoneda,

    1. Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)
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  • Prof. Dr. Hideki Yorimitsu,

    Corresponding author
    1. Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)
    2. ACT-C, Japan Science and Technology Agency (Japan)
    • Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)

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  • Prof. Dr. Atsuhiro Osuka

    Corresponding author
    1. Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)
    • Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)

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  • This work was supported by Grants-in-Aid from the MEXT (Nos.: 24106721 “Reaction Integration” and 25107002 “Science of Atomic Layers”) and from the JSPS [Nos.: 25220802 (Scientific Research (S)), 24685007 (Young Scientists (A)), 23655037 (Exploratory Research)]. T.Y. acknowledges a JSPS Fellowship for Young Scientists.

Abstract

2,18-Bis(diphenylphosphino)porphyrins undergo peripheral cyclometalation with group 10 transition-metal salts to afford the corresponding porphyrin-based PCP pincer complexes. The porphyrinic plane and the PCP-pincer unit are apparently coplanar, with small strain. The catalytic activities of the porphyrin-based pincer complexes at the periphery were investigated in the allylation of benzaldehyde with allylstannane and in the 1,4-reduction of chalcone to discover the electronic interplay between the inner metal and the outer metal in catalysis.

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