Bis(perchlorocatecholato)germane

• Verfasst von: Roth, Daniel [VerfasserIn]
• Verfasst von: Wadepohl, Hubert [VerfasserIn]
• Verfasst von: Greb, Lutz [VerfasserIn]
• Titel: Bis(perchlorocatecholato)germane
• Titelzusatz: Hard and Soft Lewis Superacid with Unlimited Water Stability
• Verf.angabe: Daniel Roth, Hubert Wadepohl, and Lutz Greb
• Jahr: 2020
• Umfang: 5 S.
• Fussnoten: First published: 10 August 2020 ; Gesehen am 27.10.2021
• Titel Quelle: Enthalten in: Angewandte Chemie
• Ort Quelle: Weinheim : Wiley-VCH, 1962
• Jahr Quelle: 2020
• Band/Heft Quelle: 59(2020), 47, Seite 20930-20934
• ISSN Quelle: 1521-3773
• DOI: doi:10.1002/anie.202009736
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: germanium
• Sach-SW: Lewis acids
• Sach-SW: structure elucidation
• Sach-SW: superacids
• Sach-SW: water
• K10plus-PPN: 1775580504
• K10plus-PPN:
  Universitätsbibliothek
• Lokale URL UB: Zum Volltext

Abstract

Previously described Lewis superacids are moisture sensitive and predominantly hard in character—features that severely limit their widespread use in orbital-controlled reactions and under non-inert conditions. Described here are adducts of bis(perchlorocatecholato)germane, the first hard and soft Lewis superacid based on germanium. Remarkably, the synthesis of this compound is performed in water, and the obtained H2O adduct constitutes a strong Brønsted acid. If applied as an adduct with aprotic donors, it displays excellent activity in a diverse set of Lewis acid catalyzed transformations, covering hydrosilylation, hydrodefluorination, transfer hydrogenation, and carbonyl-olefin metathesis. Given the very straightforward synthetic access from two commercially available precursors, the unlimited water stability and the soft Lewis acidic character, it promotes the transfer of Lewis superacidity into organic synthesis and materials science.