Wydział Chemii

Tomasz Borkowski

Paweł Subik

Anna M. Trzeciak

Stanisław Wołowiec

2011

Molecules

16

427-441

10.3390/molecules16010427

Naukowa

Angielski

Artykuł

PAMAM dendrimers of generations G2–G3 as well as a partially substituted derivative of generation G4 and a low-molecular-weight tricyclic ligand 4 were used to bind Pd(0) nanoparticles. The obtained adducts were tested as catalysts for C–C crosscoupling reactions, such as the Suzuki-Miyaura, Hiyama, Heck and Sonogashira reaction. The highest yields of the coupling product, diphenylacetylene, were obtained with all the catalysts studied in the Sonogashira coupling performed in ethanol with K2CO3 as base. Very good results, 85–100%, were also found in the Suzuki-Miyaura cross-coupling, while the efficiency of the Hiyama coupling appeared lower, with 38–52% of 2-Methylbiphenyl formed. In all reactions, the G2–Pd(0) catalyst, containing an unmodified dendrimer, afforded the highest yields of the cross-coupling products.

palladium nanoparticles, dendrimers, Suzuki-Miyaura coupling, Heck coupling, Sonogashira coupling, TEM

CC-BY

http://doi.org/:10.3390/molecules16010427

http://www.mdpi.com/journal/metals