The small size polymeric PEG35k-Pd nanoparticles are key attractions for catalysis due to their large surface to volume ratio, non-toxicity, inexpensive, thermal stability, and recoverability. Polymeric PEG35k-Pd nanoparticles in the absence of phosphine ligands are insensitive to the air and moisture and act as an active heterogeneous catalyst for the reduction of nitroarenes. ... Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic ...