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Immobilization of new Mn(salen) complex over MCM-41 and its activity in asymmetric epoxidation of styrene


New tetradentate chelates of bis-Schiff bases were synthesized and then these chiral salen ligands were immobilized over mesoporous MCM-41 by using the ion-exchange method. The efficiency of the chiral catalyst was examined in the asymmetric epoxidation of styrene. Chiral Mn(salen) complexes immobilized onto mesoporous MCM-41 were stable during the reaction without any leaching and exhibited relatively high enantioselectivity for epoxidation as compared with homogeneous complexes.

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Kim, GJ., Kim, SH. Immobilization of new Mn(salen) complex over MCM-41 and its activity in asymmetric epoxidation of styrene. Catalysis Letters 57, 139–143 (1999).

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  • MCM-41
  • chiral Mn(salen) ligand
  • ion exchange
  • asymmetric epoxidation
  • styrene