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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...

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Bibliographic Details
Main Authors: Poyatos, Macarena (Author) , Maisse-François, Aline (Author) , Bellemin-Laponnaz, Stéphane (Author) , Gade, Lutz H. (Author)
Format: Article (Journal) Festschrift
Language:English
Published: 2006
In: Organometallics
Year: 2006, Volume: 25, Issue: 10, Pages: 2634-2641
ISSN:1520-6041
DOI:10.1021/om060166u
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Festschrift
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om060166u
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Author Notes:Macarena Poyatos, Aline Maisse-François, Stéphane Bellemin-Laponnaz, and Lutz H. Gade
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Summary: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.
Item Description:Published online 4 April 2006
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Physical Description:Online Resource
ISSN:1520-6041
DOI:10.1021/om060166u

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