甲■类试剂是有色金属离子的优良显色剂。它们的各种取代衍生物,有许多作为分析试剂已被研究。近年来,为了改善该类试剂的分析性能,在甲(?)骨架上接上吡啶、噻唑、眯唑及呋喃等杂环基团,合成了一系列不对称型的杂环甲(?)。 本文报导5-Br-PNPFF试剂的合成和提纯方法。研究了它与锌显色反应的条件,用 A ■ class reagents are non-ferrous metal ions excellent developer. Many of their various substituted derivatives have been studied as analytical reagents. In recent years, in order to improve the analytical performance of these reagents, a series of asymmetric heterocycles (?) Have been synthesized by attaching heterocyclic groups such as pyridine, thiazole, pyrazole and furan to the This paper reports the synthesis and purification of 5-Br-PNPFF reagent. The conditions of its color reaction with zinc were studied