Asymmetric reactions on chiral catalysts entrapped within a mesoporous cage

The encapsulation of homogeneous chiral catalysts, e. g. Co(Salen) and Ru-TsDPEN, in the mesoporous cage of SBA-16 is demonstrated; the encapsulated catalysts show performance as good as that of the homogeneous catalysts, and can be recycled for more than 10 times without significant loss of catalytic performance.