Abstract
The potassium aluminyl [K{Al(NONDipp)}]2 ([NONDipp]2−=[O{SiMe2NDipp}2]2−, Dipp=2,6-iPr2C6H3) activates ethene towards carbonylation with CO under mild conditions. An isolated bis-aluminacyclopropane compound reacted with CO via carbonylation of an Al−C bond, followed by an intramolecular hydrogen shift to form K2[Al(NONDipp)(μ-CH2CH=CO-1κ2C1,3-2κO)Al(NONDipp)Et]. Restricting the chemistry to a mono-aluminium system allowed isolation of [Al(NONDipp)(CH2CH2CO-κ2C1,3)]−, which undergoes thermal isomerisation to form the [Al(NONDipp)(CH2CH=CHO-κ2C,O)]− anion. DFT calculations highlight the stabilising influence of incorporated benzene at multiple steps in the reaction pathways.
Original language | English |
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Article number | e202117396 |
Journal | Angewandte Chemie-International Edition |
Volume | 61 |
Issue number | 16 |
Early online date | 14 Feb 2022 |
DOIs | |
Publication status | Published - 11 Apr 2022 |
Keywords
- Aluminyl Anions
- Bimetallic Complexes
- Carbonylation
- Hydrogen-Shift
- Metallacycles
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)