Phenyl isocyanate → N-(2-(2-Oxo-1-imidazolidinyl)ethyl)-N'-phenylurea

Participants

Reaction Steps

To a mixture of 6.5 g of commercially available 1-(2-aminoethyl)-2-imidazolidone and 50 ml benzene was added 5.5 ml of phenyl isocyanate. The strongly exothermic reaction was moderated by cooling to 25°. The mixture was stirred at 25° for 4 hr. It was cooled in ice and the mixture was filtered. The solid product was crystallized from 250 ml of acetone to give 6.8 g of white 1-[2-(2-oxo-1-imidazolidinyl)ethyl]-3-phenylurea, mp 162°-164°.

Provenance & Evidence