FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to derivatives of urea. Method is carried out by oxidation of diphenylchlorophosphine with sulfuryl chloride at temperature 20-25°C in carbon tetrachloride medium. Formed diphenylphosphinic acid chloroanhydride is subjected for interaction with sodium cyanate in acetonitrile medium in the presence of anhydrous magnesium chloride as a catalyst at temperature 20-25°C followed by the addition reaction of formed diphenylphosphoryl isocyanate to n-alkylamines at temperature 20-25°C in acetonitrile medium used as a solvent. Invention provides simplifying method and synthesis of highly pure substance and decreasing energetic and economy consumptions. Synthesized compounds can be used in technology for treatment of radioactive waste in radiochemical manufacture.
EFFECT: improved method of synthesis.
5 ex
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