申请人:Imperial Chemical Industries Limited
公开号:US04048187A1
公开(公告)日:1977-09-13
5-(2-Hydroxyphenyl)tetrazoles having substituents containing at least 5 aliphatic or alicyclic carbon atoms are prepared from the corresponding o-hydroxybenzyl cyanides with alkali metal azides. These tetrazoles are useful as extracting agents in liquid-liquid extraction processes for metals, especially copper. When used in such processes in combination with o-hydroxyaryl oximes they improve the extraction kinetics of the oximes.
含有至少5个脂肪或脂环烷碳原子取代基的5-(2-羟基苯基)四唑,可通过用碱金属叠氮化物与相应的o-羟基苯甲腈反应制备。这些四唑在液液萃取过程中用作金属提取剂,特别是铜。当与o-羟基芳香族肟一起在这些过程中使用时,它们可以改善肟的提取动力学。