Reaktion #992675

ord-5e992babb9514177bb334f7e36a2c9ad

Reaktionsgleichung

O=C(O)C(=O)O
Oxalic acid
N=C(N)NN.O=C(O)O
Aminoguanidine bicarbonate
N=C(N)N.O=C(O)O
guanidine carbonate
→
NC(N)=[NH2+].NC(N)=[NH2+].O=C([O-])C(=O)[O-]
Guanidinium Oxalate

Edukte

O=C(O)C(=O)O
Oxalic acid
N=C(N)NN.O=C(O)O
Aminoguanidine bicarbonate
N=C(N)N.O=C(O)O
guanidine carbonate

Reagenzien

Keine

Lösungsmittel

O
water

Reaktionsbedingungen

Temperatur
90°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Aufarbeitung

  1. 1
    Sonstigeto avoid bubbling over the sides of the beaker due to the evolution of carbon dioxide during the reaction
  2. 2
    workup.STIRRINGThe reaction was stirred at room temperature overnight (approximately 24 hours)
  3. 3
    SonstigeThe water was removed from the reaction mixture in vacuo
  4. 4
    SonstigeThe product was recovered as a crystalline white solid

Vorschrift

Oxalic acid (200.0 g, 2.22 mol) was weighed into a 2-liter beaker with a magnetic stir bar and dissolved in 1500 ml of distilled water. Aminoguanidine bicarbonate (362.8 g, 2.67 mol) and guanidine carbonate (160.1 g, 0.89 mol) were added in portions with stirring as to avoid bubbling over the sides of the beaker due to the evolution of carbon dioxide during the reaction. The reaction was stirred at room temperature overnight (approximately 24 hours). The water was removed from the reaction mixture in vacuo with heating to approximately 90° C. for 4 hours. The product was recovered as a crystalline white solid.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08012277B2uspto-grants-2011_09