Methoxycarbonylation of Styrene Using a New Type of Palladium Complexes Bearing P,N-donor Ligands as CatalystsReportar como inadecuado




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Resumen

Palladium complexes of the type PdLClPPh3Cl L = 2-diphenylphosphinoaminopyrimidine, or 2-diphenylphosphinoaniline, generated in situ by addition of one equivalent of PPh3 to the corresponding neutral complexes PdLCl-2, were tested as catalysts for the methoxycarbonylation of styrene. The catalyst containing the pyrimidinyl ligand shows almost complete chemo- and regioselectivity together with a high conversion rate. However, in identical conditions, the PdPh2PNHC6H4PPh2Cl-2 complex, where the P,N-ligand has been replaced by a related bidentate P-donor one, shows a significantly lesser performance.Nota general

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Autor: Abarca, Gabriel; - Brown, Kareen; - Moya, Sergio A.; - Bayón, J. Carles; - Aguirre Álvarez, Pedro; -

Fuente: http://repositorio.uchile.cl/



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