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Desymmetrizing Electron‐Deficient Diboranes(4): Diverse Products and Their Reactivity |
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| Authors: | Dr. Nicole Arnold Prof. Dr. Holger Braunschweig Dr. Rian D. Dewhurst Dr. Florian Hupp Dr. Krzysztof Radacki Dr. Alexandra Trumpp |
| Affiliation: | 1. http://www.braunschweiggroup.de/;2. Institut für Anorganische Chemie, Julius-Maximilians-Universit?t Würzburg, Würzburg, Germany |
| Abstract: | A comprehensive study of the reactivity of Lewis bases with dihalodiboranes(4) is presented. Diaryldihalodiboranes provide rearranged monoadducts when treated with cyclic (alkyl)(amino)carbenes, but halide‐bridged adducts when treated with a range of pyridyl bases. Alternatively, the combination of diaminodihalodiboranes with strong carbene donors leads to boraborenium salts. The reduction and halide‐abstraction reactivity of these adducts was also explored, leading to intramolecular C?H activation and the first 1,2‐bis(borenium) dication. |
| Keywords: | boranes borenium cations carbenes diboranes Lewis adducts |