改进的亚磷酸二乙酯法合成亚甲基二膦酸四乙酯

An Improved Synthesis of Tetraethyl Methylenediphosphonate

改进的亚磷酸二乙酯法合成亚甲基二膦酸四乙酯刘国正（北京师范大学化学系北京１００８７５）关键词亚甲基二膦酸四烷基脂，亚磷酸二乙酯，合成ＭＤＰ（ＭｅｔｈｙｌｅｎｅＤｉｐｈｏｓｐｈｏｎａｔｅｓ）的四烷基酯是颇具实用价值的化合物，它与活泼金属反应可生成盐，可...

A Cheap and fast synthetic method for tetraethylmethylenediphosphonate hasbeen proposed.In nonpolar solvent, soft needle-like crystals of sodium diethylphosphonateis prepared.By adding dichloromethane to the salt,methylenediphosphonate is produced af-ter stirring for two days at room ten1perature.