“Homeopathic” Catalytic Activity and Atom‐Leaching Mechanism in Miyaura–Suzuki Reactions under Ambient Conditions with Precise Dendrimer‐Stabilized Pd Nanoparticles

What generation gap? Three generations (G0, G1, G2) of dendrimer-stabilized Pd nanoparticles (PdNPs) synthesized by click chemistry catalyze Suzuki reactions of PhX (X=I or Br) at 25 °C with increasing catalytic activity as their concentration is decreased: A turnover number of 540 000 was observed for the G0 catalyst at 1 ppm in Pd atoms. Extraction of the PdNPs with alkanethiols yields robust Suzuki catalysts for PhI only (see scheme). Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2007/z703067ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.