均相催化 Chiral Mn(lll) complex Molecules in solution Advantages Good control of catalyst t-Bu structure and composition B I-Bu High activity and selectivity can be achieved Enantioselective Epoxidation · Disadvantages: Difficult separation of products oN and catalyst Limited variation in TOF =6.9s-1 Sel= 95% T=0°C temperature Luo et a.J. Catal.287(2012)170-172 2 均相催化