Melamine → HCID 131729933, compound

HRID 2380748Notes

Reaction equation

HRID 2380748 reaction equation
[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].O.[C:11]([O-:15])(=[O:14])[CH:12]=[O:13].[Na+].[CH3:17][O:18][CH:19]([O:22][CH3:23])[CH:20]=[O:21].[OH-].[Na+]>>[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[CH3:17][O:18][CH:19]([O:22][CH3:23])[CH:20]=[O:21].[C:11]([OH:15])(=[O:14])[CH:12]=[O:13]

Participants

5

Reactant 4

HCID 7955MelamineHCID 14798Sodium HydroxideHCID 162650Acetaldehyde, 2,2-dimethoxy-HCID 23720423HCID 23720423, compound

Product 1

HCID 131729933HCID 131729933, compound

Conditions

Temperature
52.5 °C

Procedure

170 g of melamine (1.35 mol) were added to an aqueous solution made up of 311.6 g of 15% sodium glyoxylate monohydrate (Sigma Aldrich, 0.41 mol) and 495 g of 60% dimethoxyethanal (2.86 mol). This mixture was heated under stirring for 2 h at 50-55° C. while maintaining the pH close to 9-9.5 with adjustment, if necessary, with as much 20% sodium hydroxide as was required (about 7 g).

Workup

  1. temperatureThis mixture was heated
  2. temperaturewhile maintaining the pH
  3. customclose to 9-9.5 with adjustment

Sources & evidence

ORD record
ord-49a40e9652e445fa8b69375cc7cdc4fc
Source dataset
uspto-grants-2012_09
Patent number
US08257832B2

Reaction notes

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