Fabrication of Mesoporous Silica Foam and its Application as a Support to immobilize Salen Complexes for Chiral International Synthesis

초록

Some recent research dfforts have been paid to the synthesis of nanoporous or mesoporous materials with large pore sizes and uniform pore distribution. Mesoporous materials with a pore diameter in the range of 1.5~10nm would be suitable for a wide range of applications, e.g. selective catalysts for range molecules and cooperative complexes for enantioselective catalytic reactions. Formation of porosity on two or three different length scales with hierarchiral structure would be advantageous for a variety of applications for catalytic applications, reactant molecules need to access readily the interior pore structure. In our recent study, we have shown that [Co(salen)]-type complexes bearing transition-metal salts exhibited good enatioselectivity and reactivity for HKR of racemic terminal oxiranes in the synthesis of chiral atenolol