{
  "abstract": "Boron-centered spiro compounds represent a prominent platform for the design of optoelectronic materials. The orthogonally arranged π-conjugated systems around boron enhance stability toward air and moisture, facilitate processing, and allow electronic tuning through donor and acceptor substitution. Synthetic methods reported to date for the preparation of these compounds suffer from low efficiency and poor functional group tolerance, limiting the diversity of accessible electronic materials with tailored properties. Herein, we present a synthetic method leveraging the “Goldilocks” reactivity of germoles among Group 14 analogues to achieve a highly efficient and versatile AlCl3-catalyzed borodegermylation reaction, granting access to donor- and acceptor-functionalized azaboraspirobifluorenes. Furtheremore, the reaction efficiency can be enhanced by employing the sublimed catalyst and the use of an additive. Owing to their high stability, comparatively low toxicity and non-pyrophoric nature, the use of organogermanium compounds provides a more robust and safer alternative to methods that rely on other organometallic reagents.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron",
    "Julius-Maximilians-Universität Würzburg",
    "Institute of Physical and Theoretical Chemistry, Julius-Maximilians-Universität Würzburg, Emil-Fischer-Straße 42, Würzburg, 97074"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Jan Niedens"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Kevin M. Wiegand"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Vladyslav Garkusha"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jasmin Hofmann"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Daniel Volland"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Kevin Reinfurt"
    },
    {
      "affs": [
        2
      ],
      "name": "Bernd Engels"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Agnieszka Nowak-Król",
      "orcid": "0000-0003-0454-2491"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/548d03mesd7q1.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010346/v1",
  "fulltext_url": null,
  "id": "548d03mesd7q1",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010346/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|Organoboron and organosilicon chemistry"
    ]
  ],
  "openalex": "W7221682603",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010346/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/548d03mesd7q1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010346",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010346/v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Organoboron and organosilicon chemistry",
      "subfield": "organic"
    }
  ],
  "title": "Lewis-acid mediated borodegermylation grants access to donorand acceptor-substituted azaboraspirobifluorenes",
  "title_text": "Lewis-acid mediated borodegermylation grants access to donorand acceptor-substituted azaboraspirobifluorenes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/548d03mesd7q1",
  "venue": "ChemRxiv",
  "versions": []
}