Urea → Einecs 256-823-2

HRID 614977Notes

Reaction equation

HRID 614977 reaction equation
[NH2:1][C:2]([NH2:4])=[O:3].N[C:6](N)=[O:7].C(O)(=O)C[CH2:11][CH2:12][C:13]([OH:15])=[O:14]>>[NH2:1][C:2]([NH2:4])=[O:3].[C:6]([OH:7])(=[O:3])[CH2:11][CH2:12][C:13]([OH:15])=[O:14]

Participants

3

Reactant 2

HCID 1176UreaHCID 7345679421835-54-1

Product 1

HCID 6452277Einecs 256-823-2

Procedure

50 g. of urea was further added to the mother liquor with the urea-glutaric acid adduct removed and dissolved at 60° C. The resulting solution was then cooled to and allowed to stand at 15° C. for 5 hours to crystallize a urea-succinic acid adduct out of the solution. By filtration, 52 g. of urea-succinic acid adduct (including 22.0 g. of succinic acid) was obtained. Subsequently, the urea-succinic acid adduct was dissolved in 300 g. of water at 30° C. and the resulting solution was treated with the same strongly acidic ion exchange resin as mentioned above to remove urea. 200 g. of water was then distilled off from the treated solution and the solution was cooled to and allowed to stand at 10° C. to crystallize succinic acid. By filtration, 20 g. of succinic acid having a purity of 98% was obtained.

Workup

  1. customremoved
  2. dissolutiondissolved at 60° C
  3. temperatureThe resulting solution was then cooled to and
  4. customto crystallize a urea-succinic acid adduct out of the solution
  5. filtrationBy filtration, 52 g

Sources & evidence

ORD record
ord-4b3619e6a07c43d9b196483aaa2e5615
Source dataset
uspto-grants-1979_03
Patent number
US04146730

Reaction notes

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