β—二酮类萃取剂的全成及性能研究

阐述了在醇钠作催化剂、芳香烃作溶剂的条件下，由苯乙酮或其衍生物与羟酸酯发生Claisen缩合反应合成β－二酮，特别是芳香族β－二酮的方法。该合成方法的优点是可以制备出高纯度不同结构的β－二酮，且产率高；所需原料为国内易得工业品，反应溶剂可重复使用；方法简便，有较好的工业应用价值，β－二酮的萃取性能表明，它是有效的铜萃取剂。

SYNTHESIS AND CHARACTERISATION OF β-DIKETONES

A process for the preparation of β-diketones,especialy aromatic β-diketones,by Claisen condensation reaction of acetophenone or its derivatives with alphatic esters in the presense of sodium alkoxide as a catalyst in an aromatic hydrocarbon solvent is reported.The different β-diketones can be obtained with high yields and purity.The crude materials was commercially available.The process is facile and can permit efficient recirculation of solvent. 　　The experiments on testing the extraction properties of β-diketones are performed.The results indicate that these β-diketones can extract copper efficiently under certain condition and be potential to become extractant of copper.