期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 690, 期 9, 页码 2291-2296出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2005.02.035
关键词
catalysis; ferrocenes; Heck reaction; metallacycles; oxazolines; palladium
1'-Carbopalladated complexes derived from 4-ferrocenyl-1,3-oxazolines are reported in this paper as efficient catalysts for the Heck coupling of iodo- and bromoarenes with alkenes. Experimental evidence points out strongly towards the involvement of a Pd(0)/Pd(II) catalytic cycle in the mechanism of the reaction. For the first time, the disassembly of the carbopalladated complex via coupling with the olefin in a non-catalytic Heck reaction has been demonstrated to be the origin of the release of Pd(0) from the palladacycle carrier. (c) 2005 Elsevier B.V. All rights reserved.
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