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A method for homogenizing heterogeneous catalyst is described. The method is based on growing polyaminoamido (PAMAM) dendrons on silica-coated magnetic nanoparticles. After the dendronizing process, the silica-coated magnetic nanoparticles are more stable and more soluble in organic solvents. The dendronized particles are phosphonated, complexed with Rh(COD)Cl2, and applied in catalytic hydroformylation reactions. These new catalysts are proven to be highly selective and reactive.
Abu‐Reziq et al. (Wed,) studied this question.