Chiral salen manganese complex encapsulated within zeolite Y: a heterogeneous enantioselective catalyst for the epoxidation of alkenes

A chiral (salen)Mn III complex salen: trans-(R,R)-1,2-bis(salicylideneamino)cyclohexane analogous to Jacobsen’s catalyst is prepared inside the supercages of zeolite Y, showing catalytic activity very similar to that of the chloride complex in the homogeneous phase.