Abstract

It was shown that 2-thio-6-aminouracil (TAU) is an inhibitor of the radical-chain oxidation of ethylbenzene and methyl oleate. The reactivity of structurally different peroxyl radicals toward TAU was compared. The rate constants of these reactions decreased in the order 1,4-dioxane peroxyl radical, ethylbenzene peroxyl radical, and methyl oleate peroxyl radical (k₇ × 10⁴ = 30, 5.2, and 2.0 L mol^–1 s^–1, respectively, at 333 K). The reason for the decrease in the reactivity of ethylbenzene and methyl oleate peroxyl radicals was suggested.

中文翻译：

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2-硫代6-氨基尿嘧啶与过氧自由基相互作用的速率常数

摘要

结果表明2-硫代6-氨基尿嘧啶（TAU）是乙苯和油酸甲酯自由基链氧化的抑制剂。比较了结构上不同的过氧自由基对TAU的反应性。这些反应的速率常数按1,4-二恶烷过氧自由基，乙苯过氧自由基和油酸甲酯过氧自由基的顺序降低（k ₇ ×10 ^4分别为30、5.2和2.0 L mol ^–1 s ^–1，在333 K）。提出了乙苯和油酸甲酯过氧自由基的反应性降低的原因。