Propargylsilanes as Reagents for Synergistic Gold(I)-Catalyzed Propargylation of Carbonyl Compounds: Isolation and Characterization of σ-Gold(I) Allenyl Intermediates

Propargylsilanes as Reagents for Synergistic Gold(I)-Catalyzed Propargylation of Carbonyl Compounds: Isolation and Characterization of σ-Gold(I) Allenyl Intermediates