Enantioselective epoxidation of olefins with chiral (Salen)manganese(III) complexes bearing 4-Methyl-3-[(R)-l-phenylpropyl] salicylideneamine as a constituent

(Salen)manganese(III) complex 5 [2, 2′-[2-methylpropa-ne-li-diylbis(nitrilomethylidyne)]-5, 5′- dimethyl-6, 6′- (1-phenyl-propyl)diphenolatomanganese(III)] bearing one set of stereogenic centers in the 1-phenylpropyl substituents and a geminally dimethylated ethylenediamine moiety was found to catalyze the enantioselective epoxidation of olefins just as effectively as the reported (salen)manganese(III) complex 2, which bears two sets of stereogenic centers, in the ring substituents and on the ethylenediamine moiety.