Hybrid silica materials containing the di-(2-pyridyl)methylamine-palladium dichloride complex, prepared by sol-gel cogelification, are efficient recyclable catalysts for Suzuki (aryl bromides and chlorides), Heck (aryl bromides) and Sonogashira reactions (aryl iodides and bromides). Formation of palladium(0) nanoparticles is observed in the Suzuki and Heck reactions but not in the Sonogashira coupling. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
- C-C coupling
- Catalyst immobilization
- Organic-inorganic hybrid materials
- Solgel process