Abstract
Reacting the low-valent nickel complex [(dtbpe)Ni]2(μ-η2:η2-C6H6) with oxaziridines was found to form mixtures of imine, amide and aldehyde products. If the N-substituent of the oxaziridine is sufficiently bulky, a short-lived intermediate can be isolated and characterized by X-ray diffraction studies as an oxazanickela(ii)cyclobutane. This is the first well-defined example of N-O oxidative addition of an oxaziridine to a transition metal. Subsequent fragmentation of this oxazanickelacyclobutane forms a complex mixture of products, including a nickel(ii) imido complex, demonstrating that oxaziridines can serve as nitrene precursors. Preliminary mechanistic analysis is consistent with a bimetallic mechanism of fragmentation of the oxazanickelacyclobutane to form the nickel imido and η2-aldehyde complexes.
Original language | English (US) |
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Pages (from-to) | 12442-12445 |
Number of pages | 4 |
Journal | Chemical Communications |
Volume | 53 |
Issue number | 92 |
DOIs | |
State | Published - 2017 |
Bibliographical note
Publisher Copyright:© 2017 The Royal Society of Chemistry.