Preparation of Cp-Functionalized N-Heterocyclic Carbene Complexes of Ruthenium. Resolution of Chiral Complexes and Catalytic Studies
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Other documents of the author: Da Costa, André Pontes; Mata Martínez, Jose A; Royo, Beatriz; Peris, Eduardo
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http://dx.doi.org/10.1021/om100090c |
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Title
Preparation of Cp-Functionalized N-Heterocyclic Carbene Complexes of Ruthenium. Resolution of Chiral Complexes and Catalytic StudiesDate
2010Publisher
American Chemical SocietyISSN
0276-7333Bibliographic citation
Organometallics (2010), 29, 7, p. 1832-1838Type
info:eu-repo/semantics/articlePublisher version
http://pubs.acs.org/doi/abs/10.1021%2Fom100090cAbstract
A series of piano-stool ruthenium(II) complexes bearing bidentate cyclopentadienyl-functionalized N-heterocyclic carbene ligands Ru(CpX-NHC)(CO)I [Cp = tetramethylcyclopentadienyl (Cp*) and tetrabenzylcyclopentadienyl ... [+]
A series of piano-stool ruthenium(II) complexes bearing bidentate cyclopentadienyl-functionalized N-heterocyclic carbene ligands Ru(CpX-NHC)(CO)I [Cp = tetramethylcyclopentadienyl (Cp*) and tetrabenzylcyclopentadienyl (CpBz)] have been prepared by the diastereoselective reaction of the imidazolium CpX-NHC proligands with [Ru3(CO)12]. The new complexes have been characterized by spectroscopic techniques and X-ray diffraction methods. The enantiopure complexes have been separated by preparative thin-layer chromatography of the diastereomeric mixtures resulting from the reaction of the Ru(CpX-NHC)(CO)I compounds with an auxiliary chiral amine. Ru(Cp*-NHC)(CO)I is an efficient catalyst for the isomerization of allylic alcohols both in water and in TH [-]
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