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Diborane(4) Azides: Surprisingly Stable Sources of Transient Iminoboranes

Thiess, Torsten, Bélanger-Chabot, Guillaume, Fantuzzi, Felipe, Michel, Maximilian, Ernst, Moritz, Engels, Bernd, Braunschweig, Holger (2020) Diborane(4) Azides: Surprisingly Stable Sources of Transient Iminoboranes. Angewandte Chemie International Edition, 59 (36). pp. 15480-15486. ISSN 1433-7851. (doi:10.1002/anie.202003050) (KAR id:98539)

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Official URL:
https://doi.org/10.1002/anie.202003050

Abstract

Herein we describe the first examples of isolable electron-precise diboranes(4) that bear azide moieties: the acyclic 1,2-diazido-1,2-bis(dimethylamino)diborane(4) and the cyclic 1,4-diaryl-2,3-diazido-1,4-diaza-2,3-diborinines (aryl=mesityl, 2,6-xylyl, 4-tolyl). The reported examples are not only stable enough to be observed and isolated (putative transient diborane(4) azides previously reported by our group spontaneously decompose even below room temperature), but some of them are even robust enough to undergo controlled pyrolysis without explosive decomposition at temperatures well above 100 °C. In two cases, the controlled pyrolysis allows the isolation of complex diazaboretidines, which are the apparent dimerization products of endocyclic boryl-iminoboranes.

Item Type: Article
DOI/Identification number: 10.1002/anie.202003050
Divisions: Divisions > Division of Natural Sciences > Chemistry and Forensics
Funders: Deutsche Forschungsgemeinschaft (https://ror.org/018mejw64)
Alexander von Humboldt Foundation (https://ror.org/012kf4317)
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (https://ror.org/00x0ma614)
Depositing User: Felipe Fantuzzi
Date Deposited: 30 Nov 2022 16:04 UTC
Last Modified: 06 Dec 2022 14:47 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/98539 (The current URI for this page, for reference purposes)
Bélanger-Chabot, Guillaume: https://orcid.org/0000-0001-5722-2657
Fantuzzi, Felipe: https://orcid.org/0000-0002-8200-8262
Engels, Bernd: https://orcid.org/0000-0003-3057-389X
Braunschweig, Holger: https://orcid.org/0000-0001-9264-1726
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