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4-酰基吡唑啉酮是一类新型的β-双酮型螯合剂.近廿年来,国内外就这类化合物,特别对1-苯基-3-甲基-4-苯甲酰基吡唑啉酮(PMBP)进行了大量的研究工作.PMBP是镧系、锕系和碱土金属元素的优良萃取剂之一,但对一些配位数较高的金属离子,常由于水分子参与配位,萃取效果不佳.例如,PMBP萃取铀酰离子时,由于生成的螯合物中含有两个水分子,具有较大的亲水性,因而分配系数较低.目前对不同取代基的吡唑啉酮的研究还比较少,以1,3-二取代吡唑啉酮为端基的双酰代吡唑啉酮类的合成与
4-Acylpyrazolones are a new class of β-diketone chelating agents. For nearly 20 years, such compounds have been widely studied, especially 1-phenyl-3-methyl-4-benzoylpyrazole (PMBP) .PMBP is one of the excellent extractants of lanthanides, actinides and alkaline earth metals. However, for some metal ions with higher coordination number, water molecules often participate in the coordination, For example, PMBP extraction of uranyl ions, due to the chelate contains two water molecules, has a larger hydrophilicity, and thus the partition coefficient is low.At present, different substituents of pyrazoline There are still few studies on ketones. The synthesis of bisacylpyrazolones terminated with 1,3-disubstituted pyrazolones and