N,N‘—双（膦酸基苯基次甲基）—2—咪唑啉酮及2,3—哌嗪二酮的合成

摘要

By the addition reaction of the schiff base of ehylenediamine with diethyl phosphite, his-a-aminophosphonate (II) wereobtained, Which were cyclized with triphosgene or oxalyl chloride giving the title compounds (ill) or (IV) in high yields.