Journal
CATALYSIS TODAY
Volume 122, Issue 3-4, Pages 403-406Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2007.01.045
Keywords
palladium-catalysed alkynylation; gold compounds; homogeneous catalysis
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A series of inorganic and organometallic compounds of gold [AuCl(tht)], [Au(C6F5)(tht)] and Na[AuCl4] (tht = tetrahydrothiophene) are shown to efficiently co-catalyze the Sonogashira-type cross-coupling reaction of phenylacetylene with aryl halides in THF solution. [AuCl(tppts)] (tppts = trisodium salt of tris(m-sulfonatophenyl)phosphine) co-catalyzes the same reaction in biphasic aqueous systems. Gold compounds are thus revealed as efficient transmetalation catalysts to palladium. (C) 2007 Elsevier B.V. All rights reserved.
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