Аннотация:Miyaura reaction with aryl bromides using various heterogeneous Pd precursors obtainedby chemical modification and laser electrodispersion of palladium on heterogeneous supports of two types:SiO2 modified with an ionic liquid and γ-Al2O3. The catalytic experiments were carried out under “ligand free” conditions implying no additives of phosphines, amines, carbenes, or any other organic ligands for Pd stabilization. Changes in the differential selectivity of competing aryl bromides were observed while varying the nature and concentration of the Pd precursor, indicating a substantial contribution of real heterogeneouscatalysis to the total conversion of substrates
