申请人:Japan Science and Technology Agency
公开号:EP1496063A1
公开(公告)日:2005-01-12
The invention provides a process by which rare earth metal ions can be efficiently extracted by easy operation, and effective extracting reagents for the process. Specifically, phosphonamides represented by the general formula [1]; a process for producing the same; reagents for extracting rare earth metal ions, containing the phosphonamides; and a process for extraction of rare earth metal ions with the phosphonamides: [1] wherein R1 is alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, aryl, aralkyl, or a heterocyclic group, with the proviso that each group may be substituted; R2 is hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, aralkyl, or a heterocyclic group, with the proviso that each group may be substituted; R3 is hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, aralkyl, or a heterocyclic group, with the proviso that each group may be substituted, or the two R3s may be united to form alkylene, cycloalkylene, or arylene.
本发明提供了一种操作简便、可高效提取稀土金属离子的工艺,以及用于该工艺的有效提取试剂。具体地说,由通式[1]表示的膦酰胺;生产该膦酰胺的工艺;含有该膦酰胺的萃取稀土金属离子的试剂;以及用该膦酰胺萃取稀土金属离子的工艺:[1] 其中 R1 是烷基、环烷基、烯基、环烯基、炔基、芳基、芳烷基或杂环基团,但每个基团均可被取代; R2 是氢、烷基、环烷基、烯基、环烯基、芳基、芳烷基或杂环基团,但每个基团均可被取代;R3 是氢、烷基、环烷基、烯基、环烯基、芳基、芳烷基或杂环基,但每个基团均可被取代,或两个 R3 可结合形成亚烷基、环烷基或亚芳基。