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Sunday, 23 November 2014 00:00

24. Dramatic Impact of ppb Levels of Palladium on the "Copper-Catalyzed" Sonogashira Coupling

Dramatic Impact of ppb Levels of Palladium on the "Copper-Catalyzed" Sonogashira Coupling, Zsombor Gonda, Gergely L. Tolnai, Zoltán Novák, Chem. Eur. J. 2010, 16, 11822-11826. DOI: 10.1002/chem.201001880 | [Full Text Link[Supp. Info Link]

Palladacadabra! The effect of ppb levels of palladium on the “copper-catalyzed” Sonogashira coupling is reported. The observed high sensitivity to palladium impurities queries the existence of pure copper catalysis in the coupling of aryl iodides and terminal acetylenes (see figure).

zng pub 24