作者:K. Omura、T. Matsuura
DOI:10.1016/0040-4020(70)85026-8
日期:——
compounds as the main product. Relative reactivity of representative substituted phenols and the effect of the phenols on the decomposition rate of hydrogen peroxide were examined by a competition reaction with p-cresol. The apparent reactivity of phenols was found to decrease in the following order; p-Ph >p-Ac, p-Me, p-Cl > p-COOH, o-NO2, p-CN, p-t-Bu > m-COOH, p-NO2 > 2,4-(COOMe)2 > 2,4(NO2)2. The
通过过氧化氢的光分解,发现乙腈是制备各种苯酚的规模水垢羟化反应的最佳有机溶剂。用2537Å的光照射系统,形成了邻位和对位二羟基化合物的主要产物。通过与对甲酚的竞争反应研究了代表性取代酚的相对反应性和酚对过氧化氢分解速率的影响。发现苯酚的表观反应性按以下顺序降低。p -Ph> p -Ac,p -Me,p -Cl> p -COOH,o -NO2,p -CN,p -吨-Bu>米-COOH,p -NO 2 > 2,4-(COOMe)2 > -2,4(NO 2)2。对过氧化氢的分解速度的影响倾向于以相同的顺序降低,但是没有发现明显的关系。讨论了将OH自由基加到苯酚中的机理。