Urea → N,N'-Dicyclohexylurea

HRID 649622Notes

Reaction equation

HRID 649622 reaction equation
[CH:1]1([NH:7][C:8]([NH2:10])=[O:9])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH:11]1(N)[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1.NC(N)=O>>[C:8]([NH:10][CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1)([NH:7][CH:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1)=[O:9]

Participants

4

Reactant 3

HCID 1176UreaHCID 7965CyclohexylamineHCID 69684Cyclohexylurea2×

Product 1

HCID 4277N,N'-Dicyclohexylurea

Procedure

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.

Workup

  1. customfrom 100° C.

Sources & evidence

ORD record
ord-803c12e5e7b543dd9b562db49042d813
Source dataset
uspto-grants-1988_04
Patent number
US04740618

Reaction notes

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