| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1328405 | Journal of Organometallic Chemistry | 2006 | 6 Pages |
This report describes the conversion of the neutral planar chiral arene-tethered complex [Ru(η6:η1-Me2NC6H4C6H4PCy2)Cl2 (1), into [Ru(η6: η1-Me2NC6H4C6H4PCy2)(1,3-dibutylimidazol-2-ylidene)Cl]BF4 (2) via silver transmetallation. The cationic title complex is also chiral-at-metal, and forms stereoselectively as a result of the directing effect of the arene-tethered ligand. The structure in solution and in the solid state was examined; a puckered distortion of the η6-arene was noted in the crystal structure, along with a hindered rotation of the NHC in solution. As a comparison to the previously reported phosphine analogues, the dication derived from 2 was used to catalyze the asymmetric Diels-Alder reaction of methacrolein and cyclopentadiene.
Graphical abstractThe stereoselective conversion of the neutral planar chiral arene-tethered complex [Ru(η6:η1-Me2NC6H4C6H4PCy2)Cl2 (1), into [Ru(η6:η1-Me2NC6H4C6H4PCy2)(1,3-dibutylimidazol-2-ylidene)Cl]BF4 (2) via silver transmetallation is described. Two fluxional processes were observed in 2. The dication derived from 2 was used to catalyze the asymmetric Diels-Alder reaction of methacrolein and cyclopentadiene.Figure optionsDownload full-size imageDownload as PowerPoint slide
