Cover Picture: Enantiospecific CH Activation Using Ruthenium Nanocatalysts (Angew. Chem. Int. Ed. 36/2015).

Enantiospecific CH activation catalyzed by a ruthenium nanocatalyst enables the one‐step deuterium labeling of 25 bioactive compounds, such as amino acids and peptides, with full retention of configuration. In their Communication on page 10474 ff., G. Pieters et al. show that a four‐membered dimetallacycle is a key intermediate and suggest that the collective motion of surface species can facilitate the CH activation step by modulating the local electronic structure. [ABSTRACT FROM AUTHOR]