Coordination chemistry of a modular N,C-chelating oxazole-carbene ligand and its applications in hydrosilylation catalysis: dedicated to Professor Hansgeorg Schnöckel on the occasion of his 65th birthday
Reaction of 1-mesitylimidazole with 2-chlorobenzoxazole gave the 2-benzoxazolyl imidazolium salt bzoxcarbH+Cl- (1), which was converted to the silver N-heterocyclic carbene complex [AgI(bzoxcarb)Cl] (2) by reaction with Ag2O in dichloromethane. The crystal structure analysis confirmed the monomeric...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) Festschrift |
| Sprache: | Englisch |
| Veröffentlicht: |
2006
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| In: |
Organometallics
Year: 2006, Jahrgang: 25, Heft: 10, Pages: 2634-2641 |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/om060166u |
| Schlagworte: | |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om060166u
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| Verfasserangaben: | Macarena Poyatos, Aline Maisse-François, Stéphane Bellemin-Laponnaz, and Lutz H. Gade |
MARC
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| 520 | |a Reaction of 1-mesitylimidazole with 2-chlorobenzoxazole gave the 2-benzoxazolyl imidazolium salt bzoxcarbH+Cl- (1), which was converted to the silver N-heterocyclic carbene complex [AgI(bzoxcarb)Cl] (2) by reaction with Ag2O in dichloromethane. The crystal structure analysis confirmed the monomeric nature of complex 2. The silver complex 2 was reacted with [PdCl2(COD)] to yield the corresponding palladium complex [PdCl2(bzoxcarb)] (3), for which an X-ray diffraction study established a distorted square planar configuration with the imidazolyl and the oxazolyl ring lying within the molecular plane. Upon direct reaction of the imidazolium salt 1 with Pd(OAc)2/NaI, a bis-carbene palladium complex [PdI2(bzoxcarb)2] (4) was obtained. The rhodium complex [RhCl(bzoxcarb)(CO)] (5) was prepared in high yield in a one-step reaction of 1 with [Rh(acac)(CO)2] (acac = acetylacetonate). The silver N-heterocyclic carbene complex 2 was also used as carbene transfer reagent in the synthesis of the platinum complex [PtCl2(bzoxcarb)] (6), which was found to be an active catalyst for the hydrosilylation of alkenes and alkynes. | ||
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