325683-71-4Relevant articles and documents
Phosphino carboxylic acid ester functionalized carbosilane dendrimers: Nanoscale ligands for the Pd-catalyzed hydrovinylation reaction in a membrane reactor
Eggeling,Hovestad,Jastrzebski,Vogt,Van Koten
, p. 8857 - 8865 (2007/10/03)
Phosphino carboxylic acid ester terminated G0 compounds Si{(CH2)3SiMe2(C6H4 CH2OC(O)(CH2)nCH2PPh2} 4 (9a and 9b; n = 1, 2) and the carbosilane dendrimers Si{(CH2)3 Si((CH2)3SiMe2(C6H4 CH2OC(O)(CH2)nCH2PPh2) 3}4 (10a and 19b; n = 1, 2) have been prepared as hemilabile nanoscale ligands for the palladium-catalyzed codimerization of olefins. The hydrovinylation of styrene was carried out in a continuously operated nanofiltration membrane reactor. Under continuous conditions, the selectivity of the reaction is increased considerably. Monomeric model complexes and the dendritic catalysts were compared for their activity and selectivity in batch reactions. The Pd catalyst complexes were prepared in situ from the dendritic ligands and an (allyl)palladium(II) precursor.