文摘
A new series of chiral mesostructured cellular foams (MCF) was prepared by doping sodium lactates in a sol–gel process. The copper complex of an amino indanol derivative was prepared and immobilized into MCF and used in order to catalyze the asymmetric hetero-Diels–Alder reaction. Characterizations revealed that doping of sodium lactates gave the MCF matrix different chiral configurations, and copper complex was covalently attached to MCF. MCF-supported copper complexes were efficient catalysts, the synergy between the copper complex and MCF did work on chiral induction, and the supported copper complex could be used for three times without degradation. This work prepared new chiral silica materials, and afforded a new system for the asymmetric hetero-Diels–Alder reaction.