Asymmetric Reduction using Ketoiminato Cobalt(II) Complexes

The ketoiminato cobalt(II) complexes, ((R)-MPAC, (S)-MPAC, (R)-AMAC, (S)-AMAC ) developed by Mukaiyama, Yamada and co-workers are utilized for catalytic asymmetric reductions. The asymmetric reduction using these complexes can use sodium borohydride, a widely used reducing agent. Therefore, this method is receiving much attention as it is likely to become a popular, convenient and economical method for obtaining optically active alcohols and etc.