Innovative Syntheses of Cyano(fluoro)borates: Catalytic Cyanation, Electrochemical and Electrophilic Fluorination
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-216027
- Different types of high‐yield, easily scalable syntheses for cyano(fluoro)borates Kt[BF\(_{n}\)(CN)\(_{4-n}\)] (n=0–2) (Kt=cation), which are versatile building blocks for materials applications and chemical synthesis, have been developed. Tetrafluoroborates react with trimethylsilyl cyanide in the presence of metal‐free Brønsted or Lewis acid catalysts under unprecedentedly mild conditions to give tricyanofluoroborates or tetracyanoborates. Analogously, pentafluoroethyltrifluoroborates are converted into pentafluoroethyltricyanoborates. BoronDifferent types of high‐yield, easily scalable syntheses for cyano(fluoro)borates Kt[BF\(_{n}\)(CN)\(_{4-n}\)] (n=0–2) (Kt=cation), which are versatile building blocks for materials applications and chemical synthesis, have been developed. Tetrafluoroborates react with trimethylsilyl cyanide in the presence of metal‐free Brønsted or Lewis acid catalysts under unprecedentedly mild conditions to give tricyanofluoroborates or tetracyanoborates. Analogously, pentafluoroethyltrifluoroborates are converted into pentafluoroethyltricyanoborates. Boron trifluoride etherate, alkali metal salts, and trimethylsilyl cyanide selectively yield dicyanodifluoroborates or tricyanofluoroborates. Fluorination of cyanohydridoborates is the third reaction type that includes direct fluorination with, for example, elemental fluorine, stepwise halogenation/fluorination reactions, and electrochemical fluorination (ECF) according to the Simons process. In addition, fluorination of [BH(CN)\(_{2}\){OC(O)Et}]\(^{-}\) to result in [BF(CN)\(_{2}\){OC(O)Et}]\(^{-}\) is described.…
Autor(en): | Michael Drisch, Lisa A. Bischoff, Jan A. P. Sprenger, Philipp T. Hennig, Raphael Wirthensohn, Johannes Landmann, Szymon Z. Konieczka, Michael Hailmann, Nikolai V. Ignat'ev, Maik Finze |
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URN: | urn:nbn:de:bvb:20-opus-216027 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Chemie und Pharmazie / Institut für Anorganische Chemie |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Chemistry – A European Journal |
Erscheinungsjahr: | 2020 |
Band / Jahrgang: | 26 |
Heft / Ausgabe: | 50 |
Erste Seite: | 11625 |
Letzte Seite: | 11633 |
Originalveröffentlichung / Quelle: | Chemistry – A European Journal 2020, 26(50):11625 – 11633. DOI: 10.1002/chem.202002324 |
DOI: | https://doi.org/10.1002/chem.202002324 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Freie Schlagwort(e): | cyanoborates; electrochemical fluorination; fluorination; fluoroborates; ionic liquids |
Datum der Freischaltung: | 05.07.2021 |
Lizenz (Deutsch): | CC BY-NC-ND: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Keine Bearbeitungen 4.0 International |