Urea → N,N'-Dicyclohexylurea

Participants

Reaction Steps

U.S. Pat. Nos. 2,253,528 and 2,257,717 disclose a preparation of monocyclohexylurea by reacting cyclohexylamine with an excess of urea and under an overpressure in an autoclave within a temperature range from 100° C. to the decomposition point of the monocyclohexylurea. During this reaction considerable proportions of dicyclohexylurea are produced which have to be separated off in an expensive manner.

Provenance & Evidence