Regioselectivity, Stereoselectivity and Catalysis in Intermolecular Pauson-Khand Reactions: Teaching an Old Dog New Tricks

Since its discovery in the early seventies the inter­molecular Pauson-Khand reaction has made considerable progress towards a powerful synthetic method. This account describes the major accomplishments with respect to reactivity, stereoselectivity and catalytic versions, which have been achieved over the last ­decade and summarizes mechanistic information being obtained by theoretical and experimental studies.