期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 17, 页码 2950-2958出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201200098
关键词
Cyclodextrins; Nanoparticles; Palladium; Heterogeneous catalysis; C-C coupling; Click chemistry; Sandwich complexes
资金
- University Bordeaux 1
- Centre National de la Recherche Scientifique (CNRS)
- Agence Nationale pour la Recherche (ANR) [ANR-07-CP2D-05-01]
Mono-, bis-, and tris(4-ferrocenyl-1,2,3-triazolylmethyl)arene beta-cyclodextrin adducts have been used to prepare new Pd0 nanoparticle (PdNP) catalysts for CC cross-coupling reactions in EtOH/H2O. The results show that these catalysts work well in MiyauraSuzuki and Heck reactions with iodoarenes at 25 and 80 degrees C, respectively, with turnover numbers (TONs) of up to 31000 for standard MiyauraSuzuki reactions of PhI when 10 ppm of the Pd catalyst (5 nm PdNPs) were used. The results show the benefit for PdNP catalysis of encapsulating hydrophobic catalytic systems between peripheral water-solubilizing cyclodextrins as bolamphiphile-like materials because the open monoferrocenyltriazolylmethylbenzene system shows a considerably reduced catalytic efficiency compared with bis- and tris(4-ferrocenyl-1,2,3-triazolylmethyl)arene beta-cyclodextrin adducts.
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