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Fluorescent pyridine phosphonium salts via transmutation of metallabenzenes

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  • Yaowei Zhang

    (Xiamen University)

  • Feifei Han

    (Dalian University of Technology)

  • Zhihong Yin

    (Xiamen University)

  • Yapeng Cai

    (Xiamen University)

  • Xiaoyan Zhang

    (Xiamen University)

  • Hong Zhang

    (Xiamen University)

Abstract

Metallabenzenes are recognized as a unique class of aromatic compounds, not only of structural and theoretical interest but also as platforms to design powerful transformations. Here, we report the successful transmutation of a metallabenzene for pyridine synthesis. This ‘metal-to-nitrogen swapping’ process utilizes readily available ruthenabenzene phosphonium salts and commercially available 2-aminopyridines under mild conditions. The isolation of ruthena-azepines, containing a planar seven-membered aza-metallacycle, along with DFT calculations, supports the nitrogen insertion/metal deletion cascade driven by aromatization. Additionally, we investigate the tunable photophysical properties of the resulting pyridine phosphonium salts.

Suggested Citation

  • Yaowei Zhang & Feifei Han & Zhihong Yin & Yapeng Cai & Xiaoyan Zhang & Hong Zhang, 2025. "Fluorescent pyridine phosphonium salts via transmutation of metallabenzenes," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58855-7
    DOI: 10.1038/s41467-025-58855-7
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