Urea → Einecs 256-823-2

HRID 614981Notes

Reaction equation

HRID 614981 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 glutaric acid adduct removed and dissolved at 60° C. The resulting solution was cooled to and allowed to stand at 15° C. for 4 hours to precipitate a urea-succinic acid adduct. By filtration, 51 g. of urea-succinic acid adduct (including 23 g. of succinic acid) was obtained. The obtained urea-succinic acid adduct was then dissolved in 300 g. of water at 30° C. and the solution was treated with the same strongly acidic ion exchange resin as mentioned above to remove urea. 200 g. of water was removed from the treated solution and on subsequent cooling to and allowing to stand at 10° C. for 3 hours, succinic acid crystallized out of the solution. By filtration, 20 g. of succinic acid having a purity of 99% was obtained.

Workup

  1. customremoved
  2. dissolutiondissolved at 60° C
  3. temperatureThe resulting solution was cooled to and
  4. customto precipitate a urea-succinic acid adduct
  5. filtrationBy filtration, 51 g

Sources & evidence

ORD record
ord-7da86a2637f04bad9de027255912bf49
Source dataset
uspto-grants-1979_03
Patent number
US04146730

Reaction notes

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