申请人:Societe Nationale des Poudres et Explosifs
公开号:US03932524A1
公开(公告)日:1976-01-13
A process for the preparation of phosphine oxides or sulphides of the formula: ##EQU1## in which R is a linear or branched aliphatic radical containing 5-12 carbon atoms, aralkyl radical selected from the group consisting of lower alkyl of 2-3 carbon atoms substituted by a phenyl group or R is cyclohexyl and X is an oxygen or sulphur atom comprising reacting a halo-compound of the formula R--Hal, in which Hal is chlorine, bromine or iodine, with magnesium to form a Grignard derivative of the formula RMgHal, the reaction being carried out initially in a very small amount of diethyl ether and then in a solvent mixture containing a preponderant amount of an aliphatic or aromatic hydrocarbon, which is liquid at room temperature or triethylamine, adding phosphorus oxychloride or phosphorus sulphochloride to the reaction mixture containing the Grignard derivative, and isolating the phosphine oxide or phosphine sulphide formed by removing the solvent by steam stripping or steam distillation. These compounds are valuable for use in the selective extraction of rare metals.
一种制备磷氧化物或磷硫化物的方法,化学式如下:##EQU1## 其中R是含有5-12个碳原子的直链或支链脂肪基,芳基烷基基团,包括由苯基取代的2-3个碳原子的低碳烷基基团,或R是环己基,X是氧或硫原子,包括将具有化学式R-Hal的卤代化合物(其中Hal是氯、溴或碘)与镁反应形成化学式RMgHal的格氏试剂衍生物,反应最初在少量乙醚中进行,然后在包含大量脂肪或芳香烃的溶剂混合物中进行,该溶剂在室温下为液体,或者在三乙胺中进行,向含有格氏试剂的反应混合物中加入氧氯化磷或硫氯化磷,通过蒸汽蒸馏去除溶剂来分离形成的磷氧化物或磷硫化物。这些化合物在稀有金属的选择性提取中具有重要价值。