Sol–gel entrapped dichlorobis(triphenylphosphine)palladium as an efficient recyclable catalyst for the cross-coupling of aryl halides with indium- and related alkylating reagents

Recoverable Palladium Catalysts for Suzuki–Miyaura Cross‐ Coupling Reactions Based on Organic‐Inorganic Hybrid Silica Materials Containing Imidazolium and Dihydroimidazolium Salts

“…In most cases described in the literature for NHC-based supported catalysts [9,15] only recycling experiments with aryl iodides or aryl bromides are reported. Even if phosphane ligands are more prone to oxidation, silica sol-gel entrapped dichlorobis(triphenylphosphane)palladium has been described [16] as an efficient catalyst in Suzuki cross-couplings, although significant amounts of homocoupling products are also obtained and the recycling of the catalyst is only reported for the reaction of phenylboronic acid with 4-bromotoluene.…”

Sol–gel entrapped Cu in a silica matrix: An efficient heterogeneous nanocatalyst for Huisgen and Ullmann intramolecular coupling reactions

“…At the same time, this entrapment protects the catalyst from redox changes and incompatible chemicals, thus allowing multistep one-pot reactions to be carried out with entrapped catalysts in the presence of entrapped catalyst poisons [12,13]. Some recent examples with PdCl 2 (PPh 3 ) 2 and Pd(PPh 3 ) 4 have highlighted the potential of this field [14,15].…”