Journalartikel

Autorenliste: Landmann, J; Keppner, F; Hofmann, DB; Sprenger, JAP; Häring, M; Zottnick, SH; Müller-Buschbaum, K; Ignat'ev, NV; Finze, M

Jahr der Veröffentlichung: 2017

Seiten: 2795-2799

Zeitschrift: Angewandte Chemie International Edition

Bandnummer: 56

Heftnummer: 10

ISSN: 1433-7851

DOI Link: https://doi.org/10.1002/anie.201611899

Verlag: Wiley

Abstract: 
The first deprotonation of a borohydride anion was achieved by treatment of [BH(CN)(3)](-) with strong nonnucleophilic bases, which resulted in the formation of alkalimetal salts of the tricyanoborate dianion B(CN)(3)(2-) in up to 97% yield and 99.5% purity. [BH(CN)(3)](-) is less acidic than (Me3Si)(2)NH but a stronger acid than iPr(2)NH. Less sterically hindered, more nucleophilic bases such as PhLi and MeLi mostly attack a CN group under formation of imine dianions [RC(N) B(CN)(3)](2-), which can be hydrolyzed to ketones of the [RC(O) B(CN)(3)](-) type. The boron-centered nucleophile B(CN)(3)(2-) reacts with CO2 and CN+ reagents to give salts of the [B(CN)(3)CO2](2-) dianion and the tetracyanoborate anion [B(CN)(4)](-), respectively, in excellent yields.

Harvard-Zitierstil: Landmann, J., Keppner, F., Hofmann, D., Sprenger, J., Häring, M., Zottnick, S., et al. (2017) Deprotonation of a Hydridoborate Anion, Angewandte Chemie International Edition, 56(10), pp. 2795-2799. https://doi.org/10.1002/anie.201611899

APA-Zitierstil: Landmann, J., Keppner, F., Hofmann, D., Sprenger, J., Häring, M., Zottnick, S., Müller-Buschbaum, K., Ignat'ev, N., & Finze, M. (2017). Deprotonation of a Hydridoborate Anion. Angewandte Chemie International Edition. 56(10), 2795-2799. https://doi.org/10.1002/anie.201611899