Phosphorus 2,4,5-imidazolidinetriones are obtained in two different wa
ys : the synthesis of dithiophosphate and phosphonium salt derivatives
involves the reaction between a common N-chloromethyl heterocycle and
corresponding phosphorus partners, while the preparation of phosphona
te and phosphine oxide imidazolidinetriones is done by two multi-step
synthesis starting from different phosphorus phthalimides.