Study of some Heterocyclic Compounds Containing Rhodanide Group as Antioxidant Additives

Аннотация

In the field of synthesis and study of the antioxidant activity of novel derivatives of rhodanides, we carried out a targeted synthesis of this compounds of cyclic thioureas and established a relationship between their structures and antioxidant properties. The antioxidant properties of the synthesized compounds were studied in model reactions. Since the study of the mechanism of the antioxidant action of oxidation inhibitors under real conditions of oxidation of lubricating oils is very difficult, the antioxidant effect of the compounds synthesized by us was studied in the oxidation reaction of a model hydrocarbon-cumene, the oxidation mechanism of which was studied in detail. The study of cumene autoxidation in the presence of these compounds showed that they effectively inhibit the autoxidation process. Thus, the study of the heterocyclic derivatives of rhodanides (E1- E3), which we synthesized by model reactions as hydrocarbon oxidation inhibitors, revealed that these compounds repel peroxide radicals, break oxidation chains, and catalytically decompose hydroperoxides into molecular compounds. The substances studied are antioxidants with a combined effect.