Cooperative Catalysis: Enantioselective Propargylic Alkylation of Propargylic Alcohols with Enecarbamates Using Ruthenium/Phosphoramide Hybrid Catalysts
The diastereo‐ and enantioselectivepropargylicalkylation of propargylicalcohols with E‐enecarbamates in the presence of a catalytic amount of thiolate‐bridged diruthenium complexes bearing an optically active phosphoramide moiety gives the corresponding propargylic alkylated products (up to 97 % ee).
An efficient catalytic enantioselectiveaza-ene-typereaction of glyoxal derivatives with enamides and enecarbamates has been realized using a nickel(II)-N,N'-dioxide complex as the catalyst.