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Porphyrin “Lego Block” Strategy To Construct Directly meso–β Doubly Linked Porphyrin Rings


  • This work was supported in part by Grants-in-Aid for Scientific Research (Nos. 18685013, 19205006 (A), and 20108001 “pi-Space”) and for Young Scientists (B) from MEXT, and by the JST PRESTO program. The work at Yonsei University was supported by the Star Faculty program from the Ministry of Education and Human Resources Development, Korea. H.S. gratefully acknowledges financial support from the Asahi Glass Foundation. The authors thank Prof. H. Maeda, Y. Haketa, and T. Hashimoto (Ritsumeikan University) for MALDI-TOF MS measurements.


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Clicking together: The Suzuki–Miyaura coupling of β,β′-diborylated porphyrin blocks and meso,meso′-dibrominated porphyrin blocks was used for the construction of directly meso–β doubly linked porphyrin rings including two tetraporphyrin rings, hexaporphyrin rings, and a bridged heptaporphyrin (see picture).