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Electrochemical behaviour of PdII(PPh3)2Cl2 in the presence of carbon monoxide and its use in the palladium-catalyzed electrochemical formylation of iodoanisole

✍ Scribed by I. Chiarotto; I. Carelli; V. Carnicelli; F. Marinelli; A. Arcadi

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 635 KB
Volume: 41
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(96)00011-4

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✦ Synopsis

Pd"(PPh,)," generated by electroreduction of Pd"(PPhs),Cl, in the presence of carbon monoxide exists mainly in the form of low-ligated zerovalent palladium complex Pd"(PPh,),CO. On the basis of the experimental results, a mechanism is proposed for its formation. The oxidative addition of 4iodoanisole to zerovalent palladium centre to afford a cyclic palladium(I1) centre seems to be very et% cient, but the Canisaldehyde formation undergoes severe competition with the two-electron reduction yielding anisole.

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