Organometallics p. 3009 - 3013 (1992)
Update date:2022-08-11
Topics:
Amatore, Christian
Jutand, Anny
M'Barki, Mohamed Amine
The mixture Pd(OAc)2 + nPPh3 (n ≥ 2) and the complex Pd(OAc)2(PPh3)2 commonly used as catalysts in reactions involving aryl and vinyl halides, aryl inflates or allylic acetates spontaneously generate a zerovalent palladium complex that reacts with iodobenzene. Triphenylphosphine reduces the divalent palladium from the complex Pd(OAc)2(PPh3)2 by an intramolecular reaction and is oxidized to triphenylphosphine oxide. In the presence of an excess of triphenylphosphine, the zerovalent palladium complex generated in situ has the same 31P NMR and cyclic voltammetry properties as those of Pd0(PPh3)4.
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(1923)
