| Autor: |
Viciu, M. S., Stevens, E. D., Petersen, J. L., Petersen, J. L., Nolan, S. P. |
| Zdroj: |
Organometallics; July 2004, Vol. 23 Issue: 15 p3752-3755, 4p |
| Abstrakt: |
The synthesis and reactivity of palladium acetate/trifluoroacetate complexes stabilized by the presence of N-heterocyclic carbene (NHC) ligands are described. The structures and coordination characteristics of both (IPr)Pd(OAc)2 (1) and (IPr)Pd(OOCCF3)2(H2O) (2) were elucidated by spectroscopic and X-ray diffraction studies. The structure of 1 shows a novel coordination of the anions in a monomeric complex, with one acetate anion acting as a monodentate ligand while the second one coordinates through both oxygens. The NHC ligands in 1 and 2 are stable under acidic conditions. The complexes were used as precatalysts in the hydroarylation of alkynes. Using this simple protocol, a number of arenes react with various alkynes to produce stilbenes. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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