Substitution and electron transfer in diborane-quinone systems
The dual reactivity of boron compounds as Lewis acids and electron donors has spurred the development of a metallomimetic chemistry of boron compounds as a topical research theme. In this work we elaborate on the reaction of specially-designed diborane(4) compounds with quinones, as a prime example...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
March 20, 2025
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| In: |
Chemistry - a European journal
Year: 2025, Volume: 31, Issue: 17, Pages: 1-14 |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.202404584 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/chem.202404584 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.202404584 
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| Author Notes: | Daniel Vogler, Julian Krauß, Tobias Kaczun, Gent Dulatahu, Elisabeth Kaifer, and Hans-Jörg Himmel |
| Summary: | The dual reactivity of boron compounds as Lewis acids and electron donors has spurred the development of a metallomimetic chemistry of boron compounds as a topical research theme. In this work we elaborate on the reaction of specially-designed diborane(4) compounds with quinones, as a prime example showing their dual (metallomimetic) chemistry as a Lewis acid and electron donor. The quinone is first coordinated to the diborane and then reduced by intramolecular electron transfer from the B−B bond to a quinone π* orbital. A variety of substitution reactions of the catecholate-diborane reaction product was carried out, leading to new catecholato-diborane compounds and thereby shedding light on the likely mechanisms. Notably, the results disclose the importance of a facile coordination-mode change of the catecholato ligand (end-on to bridging) for substitution reactions and for the diborane-quinone reactions. The results contribute to the further advancement in the use of diboranes with dual reactivity for substrate binding and reduction. |
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| Item Description: | Zuerst veröffentlicht: 31. Januar 2025 Gesehen am 24.07.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.202404584 |