Regio- and Diastereoselective Nucleophilic Additions of Lithium Enolates on the Allenylidene Complexes [RuCCC(R)Ph(η5-C9H7)(PPh3)2][PF6] (R = H, Ph): Synthesis of the First Chiral Keto-Functionalized (σ-Alkynyl)ruthenium(II) Complexes | Publicación