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- Title
Synthesis of Heterodimetallic Iridium-Palladium Complexes Containing Two Axes of Chirality: Study of Sequential Catalytic Properties.
- Authors
Sabater, Sara; Mata, Jose A.; Peris, Eduardo
- Abstract
The reaction of [Cp*Cl2Ir(triazolium-ylidene)]BF4 (Cp* = pentamethylcyclopentadienyl) with chiral orthometalated palladium dimers results in facile bridge splitting to afford heterodimetallic Ir-Pd* complexes. The structural characteristics of these complexes show the presence of different isomers as a consequence of hindered rotation about the M-Ccarbene bond (M = Ir/Pd). The heterodimetallic complexes contain two axes of chirality related to each metal. The crystal structure of one heterodimetallic iridium-palladium complex derived from the chiral N, N-dimethylbenzylamine ligand is described and contains two of the rotamers. The Ir/Pd* complexes have been tested in a sequence of two catalytic reactions, which implies the isomerization and asymmetric hydrophosphination of 1,3-diphenylpropargyl alcohol. All the catalysts show high activity in the overall reaction process and excellent regioselectivity, although the enantioselectivities were low.
- Subjects
CHEMICAL synthesis; IRIDIUM; PALLADIUM; CHIRALITY; CRYSTAL structure; REGIOSELECTIVITY (Chemistry); CONFORMATIONAL isomers
- Publication
European Journal of Inorganic Chemistry, 2013, Vol 2013, Issue 27, p4764
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201300667