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Pd Nanoclusters in CC Coupling Reactions: Proof of Leaching

2006; Wiley; Volume: 45; Issue: 18 Linguagem: Inglês

10.1002/anie.200504321

1521-3773

Mehul B. Thathagar, Johan E. ten Elshof, Gadi Rothenberg,

Asymmetric Hydrogenation and Catalysis

A simple experiment based on exclusion of Pd nanoclusters was used to identify the true catalytic species in cluster-catalyzed Heck cross-couplings. A special reactor was used in which two compartments are separated by a nanoporous membrane that allows the passage of Pd atoms and ions but not of Pd nanoclusters (see picture). The results show that the real catalysts in the Heck coupling of n-butyl acrylate with iodobenzene are species leached from the Pd nanoclusters.