Group 13-derived radicals from α-diimines via hydro- and carboalumination reactions
The mechanochemical synthesis of tertiary and secondary alanes AlR 3 (R = Np 1 or Mes 2 ; HAlR 2 R = Np 3 or Mes 4 ) is described. These species are reacted with several α-diimines to give a series of aluminium-derived radicals of the form [(diimine)AlR 2 ]˙ ( 6–11 ). EPR and several crystallographi...
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| Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2020-09, Vol.49 (33), p.11689-11696 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The mechanochemical synthesis of tertiary and secondary alanes AlR
3
(R = Np
1
or Mes
2
; HAlR
2
R = Np
3
or Mes
4
) is described. These species are reacted with several α-diimines to give a series of aluminium-derived radicals of the form [(diimine)AlR
2
]˙ (
6–11
). EPR and several crystallographic studies are reported. These species are thought to form
via
hydro- or carboalumination and subsequent elimination reactions. This view is supported by the structural data for minor products C
12
H
7
(NHDipp)(NDipp)Al
i
Bu
2
5
and C
13
H
8
(C(
i
Bu)N(
m
-Xy)(NH(
m
-Xy)))Al
i
Bu
2
12
. In addition, the characterization of (C
6
F
5
)
2
B(OC(C
6
F
5
)OC
12
H
8
) indicates that such a carboboration pathway also provides access to related boron-derived radicals. |
|---|---|
| ISSN: | 1477-9226 1477-9234 |
| DOI: | 10.1039/d0dt02498h |