Efficient epoxidation of alkenes with sodium periodate catalyzed by manganese porphyrins in ionic liquid: Investigation of catalyst reusability

In the present work, efficient epoxidation of alkenes with sodium periodate catalyzed by tetraphenylporphyrinatomanganese(III) chloride, Mn(TPP)Cl, and octabromotetraphenylporphyrinatomanganese(III) chloride, Mn(Br8TPP)Cl, using (1-n-butyl-3-methylimidazolium tetrafluoroborate), [bmim][BF4], as ionic liquid is reported. The effect of substituted bromines on the catalytic activity and reusability of manganese porphyrins was also investigated.