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Updated: Sep 21, 2025
07:49
Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
Published on: February 20, 2020
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Facile C-H bond activation on a transient gallium imide
Aishabibi Kassymbek1, Denis Spasyuk2, Anton Dmitrienko1
1Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada. gnikonov@brocku.ca.
Chemical Communications (Cambridge, England)
|May 31, 2022
Summary
A novel gallium imide compound was synthesized and demonstrated to activate unactivated C-H bonds in various organic substrates. This discovery opens new pathways for synthesizing valuable gallium amide compounds.
Area of Science:
- Organometallic Chemistry
- Main Group Chemistry
Background:
- Gallium complexes with bulky ligands are of interest for catalytic applications.
- Activation of C-H bonds is a fundamental transformation in organic synthesis.
Purpose of the Study:
- To investigate the reactivity of a NacNacGa complex with an azide source.
- To explore the potential of the generated intermediate for C-H bond activation.
Main Methods:
- Reaction of NacNacGa with trimethylsilyl azide (N3SiMe3).
- Characterization of new compounds using multinuclear NMR spectroscopy and X-ray diffraction.
Main Results:
- Generation of a transient gallium imide intermediate, NacNacGa(NSiMe3).
- Demonstration of C-H bond activation in substrates like pyridine, cyclohexanone, ethyl acetate, DMSO, and triethylphosphine oxide.
- Formation of corresponding gallium amide products.
Conclusions:
- The transient gallium imide is a potent reagent for cleaving unactivated C-H bonds.
- This methodology provides a new route to synthesize diverse gallium amides.
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