Hypericin as inhibitor of the Chain-radical oxidation of the Organic compounds
It was shown the property of hypericin to inhibit the chain-radical oxidation of the organic compounds. The experiments were carried out on two models of reactions initiated by liquid-phase radical-chain oxidation of substrates - cumene (IPB) and isopropyl alcohol (IPA) under the action of naphtodthyron pigment - hypericin. The inhibitory property of hypericin is inverted with growing the concentration of this compound, and it became the initiator of oxidation processes. The reason of this inversion is the homolitic interaction of hypericin with the peroxide products. The result of it is the increasing of speed of the degenerated branching of the oxidant chain.