十一种双功能团中性有机膦类的合成及其对Au（Ⅲ）的萃取性能

The syntheses of some bifunctional organo-phosphorus compounds and their use as gold (Ⅲ) extractants

报道１０种甲酰胺代甲基膦酸酯和一种氧化膦的合成。它们是Ｎ，Ｎ－二乙基甲酰胺代甲基膦酸的二正了酯（Ａ），二异丁酯（Ｂ），二五戊酯（Ｃ），二异戊酯（Ｄ），二正己酯（Ｅ），二异己酯（Ｆ），二正辛酯（Ｇ），双（２－乙己基）酯（Ｈ），Ｎ，Ｎ－二丙基甲酰胺代甲基膦酸二正己酯（Ｉ），Ｎ，Ｎ－二丁基甲酰胺代甲基膦酸二正己酯（Ｋ）和氧化二正己基（Ｎ，Ｎ－二乙基甲酰胺代甲基）膦（Ｍ）。给出上述化合物的元素分析数据以及红外和核磁共振谱。除化合物Ｂ外其余１０种对Ａｕ（Ⅲ）的萃取能力均高于常用的磷酸三丁酯。酸度对金的萃取率亦有影响。

This paper reports the syntheses of the followingcompounds: di-n-butyl(A), di-iso-butyl (B), di-npentyl (C), di-iso-pentyl(D), di-n-hexyl (E), diiso-hexyl (F), di-n-octyl (C), bis (2-ethylhexyl)(H) esters of N, N - diethylcarbamoylmethyIphosphonicacid, di-n-hexyl N, N-dipropylcarbamoylmethyl(Ⅰ),di-n-liexyI N, N-dibutylcarbamoylmethylphospho(K), and (N, N-diethylcarbamoylmethyl) dihexylposphine oxide (M). Their elemental analyses, as wellas IR and 1HNMR spectra are presented. Except compound B, they are better gold (Ⅲ) extractants thantributyl phosphate. The effect of aqueous phaseacidity upon the extractability of gold (Ⅲ) has beenstudied.