Synthesis and antioxidant activity of 7,7,9-trimethyl-6,7-dihydrofuro[3,2-f]quinoline
作者:V. A. Kuzmin、L. I. Mazaletskaya、T. D. Nekipelova、E. N. Khodot
DOI:10.1007/s11172-008-0343-x
日期:2008.11
The method for the synthesis of 7,7,9-trimethyl-6,7-dihydrofuro[3,2-f]quinoline was developed. The parameters characterizing its antioxidant activity, the stoichiometric inhibition factor (f ≈ 3), and the rate constant of the reaction with peroxy radicals (fk 7 = 2.4 · 105 L mol−1 s−1, 60 °C) were determined for the model system of initiated ethylbenzene oxidation. The inhibition stoichiometric factor of furodihydroquinoline is 2, but the colored product formed as a result of its conversion in oxidized hydrocarbons provides the additional inhibition with k 7 = 6.3 · 103 L mol−1 s−1.
开发了合成 7,7,9- 三甲基-6,7-二氢呋喃并[3,2-f]喹啉的方法。针对启动的乙苯氧化模型体系,确定了其抗氧化活性的特征参数、化学计量抑制因子(f ≈ 3)以及与过氧自由基反应的速率常数(fk 7 = 2.4 - 105 L mol-1 s-1, 60 °C)。呋喃二氢喹啉的抑制化学计量系数为 2,但其在氧化烃中转化形成的有色产物提供了额外的抑制作用(k 7 = 6.3 - 103 L mol-1 s-1)。