Some 2-pyridyl ketone hydrazones were subjected to aerial oxidation catalyzed by Cu2+. The oxidation product of di-2-pyridyl ketone hydrazone had the structure of a derivative of [1, 2, 3]-triazolo[1, 5-a]pyridine, and this structure is different from that previously proposed by other investigators. The fluorescence spectra of the oxidation products were measured in solutions of a wide pH range. In contrast to the oxidation products of other 2-pyridyl ketone hydrazones, that of di-2-pyridyl ketone hydrazone showed very strong fluorescence in acidic media. The characteristic nature of this compound was also apparent in the ultraviolet spectrum. The generation of hydroxyl radical was demonstrated in the aerial oxidation of di-2-pyridyl ketone hydrazone catalyzed by Cu2+, suggesting the formation of hydrogen peroxide as another oxidation product.
一些 2-
吡啶酮腙在 Cu2+ 催化下进行了架空氧化。二-2-
吡啶酮腙的氧化产物具有[1, 2, 3]-三唑并[1, 5-a]
吡啶衍生物的结构,这种结构与其他研究者之前提出的结构不同。氧化产物的荧光光谱是在较宽 pH 值范围的溶液中测量的。与其他 2-
吡啶酮
肼的氧化产物不同,二-2-
吡啶酮
肼的氧化产物在酸性介质中显示出非常强的荧光。这种化合物的特征在紫外光谱中也很明显。在 Cu2+ 催化下,二-2-
吡啶基酮腙的气相氧化过程中产生了羟基自由基,这表明另一种氧化产物是
过氧化氢。