An improved process for the preparation of a diester of phosphoric acid 2,5-dioxo-4,4-diphenyl-imidazolidin-1-ylmethyl ester is described where an alkali metal phosphate is treated with a 3-(chloromethyl)- or 3-(bromomethyl)-5,5-diphenyl-2,4-imidazolidinedione to afford the desired product, as well as valuable intermediates used in the process.
本文描述了一种改进的方法用于制备
磷酸二酯2,5-二氧-4,4-二苯基
咪唑啉-1-基甲酯,其中碱
金属
磷酸盐与3-(
氯甲基)-或3-(
溴甲基)-5,5
-二苯基-2,4-
咪唑啉二酮反应,从而得到所需的产品,以及在该过程中使用的有价值的中间体。