Abstract
Pd exchanged NaY zeolites ([Pd(0)]–, [Pd(II)]– and entrapped [Pd(NH 3) 4]) exhibit a good activity towards the α-arylation of carbonyl compounds using different para-substituted aryl bromides. Low Pd-concentrations (only 2 mol%) are required to observe interesting activity. The catalysts can easily be separated from the reaction mixture and reused without any loss in activity. For large-scale applications the alternative use of an insoluble base as K 2CO 3 seems to be promising. The electronic nature of the aryl halides plays a limited role concerning the rate of the reaction.
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