A novel supported Katsuki-type (salen)Mn complex for asymmetric epoxidation.
We have successfully prepared an unsymmetrical analogue of a Katsuki-type salen ligand having a hydroxyalkyl group at the 6-position of just one of the binaphthyl units in the ligand, and also several Mn(III) complexes; these complexes have been attached to a polymer by an ester link and such polymer catalysts have been shown to be highly enantioselective and recoverable catalysts for the epoxidation of 1,2-dihydronaphthalene.
Centre for Clean Chemistry, Department of Chemistry, University of Wales-Swansea, Singleton Park, Swansea SA2 8PP, UK.
Keith
K
Smith
Chia-Hui
CH
Liu
Gamal A
GA
El-Hiti