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A new three-component catalytic system, water/ionic liquid/metal phthalocyanine complex, was studied for the oxidition of cysteine to prepare cystine. It was found that the water/ 1-n-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF4])/iron (II) phthalocyanine (FeIIPc) system exhibited an excellent catalytic activity in the oxidition of cysteine. Cystine was obtained with 98% isolated yield...
A novel homogeneous and recyclable catalytic system was applied in the oxidation of nitrotoluenes to nitrobenzoic acids with the isolated yield of 93%. In this method, the catalytic system could be easily separated from the aqueous phase by simple decantation and could be reused in subsequent runs without apparent change in activity.
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