No abstract

The palladium(0) complexes of (E,E,E)‐1,6,11‐tris(arenesulfonyl)‐1,6,11‐triazacyclopentadeca‐3,8,13‐trienes deliver palladium to phosphanes with the generation of high concentrations of catalytically active species such as Pd(PPh3)2. After oxidation of the phosphanes, the palladium is reincorporated into the macrocycle, thus avoiding agglomeration and precipitation. These conclusions were reached by 31P NMR, 19F NMR, and electrospray ionization mass spectrometry studies of telomerization and Tsuji−Trost reactions. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

No abstract

Conditions to achieve the palladium‐catalysed telomerization of butadiene with L‐arabinose and D‐xylose as telogens have been identified. With DMF as solvent, optimised ratios of substrate, reactants and catalytic system allowed the selective grafting of one octadienyl chain onto the anomeric hydroxy group. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)