Abstract
The polystyrene-immobilised palladacyclic complexes [Pd(TFA)(kappa2-N,C-C6H4CH2NMe2){P(C6H4-4-PS)Cy2}] and [PdCl(kappa2-P,C-{P(OC6H2-2,4-tBu2)(OC6H3-2,4-tBu2)2}{P(C6H4-4-PS)Cy2}](PS = polystyrene) and the homogeneous analogues [Pd(TFA)(kappa2-N,C-C6H4CH2NMe2)(PPhCy2)] and PdCl(kappa2-P,C-{P(OC6H2-2,4-tBu2)(OC6H3-2,4-tBu2)2}(PPhCy2)] were synthesised and characterised. The X-ray structure of one of the homogeneous analogues, [Pd(TFA)(kappa2-N,C-C6H4CH2NMe2)(PPhCy2)] was determined. All the complexes have been tested and show good activity in the Suzuki coupling of aryl chloride substrates. While the polystyrene-immobilised complexes are not recyclable, they are easily extracted and show low levels of palladium leaching.
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