Product 1is produced by reaction of racemic diaminocyclohexane with L-(+)-tartric acid, then it is condensed with 3,5-di-tert-butyl salicylaldehyde to give chiral Ligand 2, after which 2reacts with Co(OAc)₂·4H₂O, and then it is converted to Salen-Co(Ⅲ)(OAc) by oxidation. Research in hydrolytic kinetic resolution of racemic terminal epoxides by Salen-Co(Ⅲ)(OAc) catalyst is conducted, and the ee value of chiral diol is of up to 99.7%.