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Type: Artigo de periódico
Title: Palladium-catalyzed oxyarylation of olefins using silver carbonate as the base. Probing the mechanism by electrospray ionization mass spectrometry
Author: Buarque, CD
Pinho, VD
Vaz, BG
Eberlin, MN
da Silva, AJM
Costa, PRR
Abstract: The Pd(OAc)(2)-catalyzed oxyarylation of electron-rich (8 and 12) and electron-poor (10) olefins by ortho-iodophenols (3a-d) was studied using Ag(2)CO(3) as the base, in acetone, and in the presence and absence of PPh(3). The corresponding adducts of oxyarylation were obtained in moderate yields. The reaction mechanism was examined by electrospray ionization mass spectrometry (ESI-MS). Cationic arylpalladium intermediate (14), formed by the oxidative insertion of Pd(0) into 3a, and the cationic palladacycles (15), obtained by reaction of 14 with olefins 8 and 12, were intercepted by ESI-MS and characterized by ESI-MS/MS. (c) 2010 Elsevier B.V. All rights reserved.
Subject: Oxyarylation
Palladium catalyst
Mass spectrometry
Country: Suíça
Editor: Elsevier Science Sa
Citation: Journal Of Organometallic Chemistry. Elsevier Science Sa, v. 695, n. 18, n. 2062, n. 2067, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.jorganchem.2010.05.014
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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