Dynamic Kinetic Resolution with Enantioselective Borohydride Reduction Catalyzed by Optically Active β-Ketoiminato Cobalt(II) Complexes: Highly Diastereo- and Enantioselective Preparation of Optically Active<i>anti</i>-Aldol Compounds
Opticallyactive anti-2-alkyl-3-hydroxy esters were stereoselectively obtained from the corresponding 2-alkyl-3-keto esters using enantioselective borohydride reduction along with dynamic kinetic resolution in the presence of opticallyactive β-ketoiminato cobalt complex catalysts. The reduction system provided an alternative preparation for anti-aldol compounds with high diastereo- and enantioselectivities