SYNTHESES AND ABSORPTION SPECTRA OF 2-SUBSTITUTED-3-HYDROXY-5-PYRAZOLONES: 4-<i>n</i>-HEXYL-5-PYRAZOLONES-4-C<sup>14</sup>
作者:Paul E. Gagnon、Jean L. Boivin、Roderick MacDonald、Leo Yaffe
DOI:10.1139/v54-105
日期:1954.9.1
materials the corresponding pyrazolones labelled with C14 were obtained. Their specific activities were 7.0, 8.8, 9.0, and 8.8 µc./gm. respectively. Ultraviolet absorption spectra were determined in neutral and alkaline solution and the infrared spectra were also obtained. From the data it was possible to ascribe the tautomeric structures best suited for the compounds.
2-单取代-3-羟基-5-吡唑啉酮由丙二酸二乙酯本身和丙二酸二乙酯单取代的甲基、乙基、丙基、丁基、戊基、己基、庚基和苄基通过酯与邻-、间-的缩合反应制备、对氯苯肼和正己基肼。以丙二酸二乙酯-2-C14 和邻-、间-、对-氯苯肼和正己基肼为起始原料,得到相应的C14 标记的吡唑啉酮类化合物。它们的比活度分别为 7.0、8.8、9.0 和 8.8 µc./gm。分别。在中性和碱性溶液中测定了紫外吸收光谱,并获得了红外光谱。从数据中可以确定最适合这些化合物的互变异构结构。