Carbon Dioxide → 2-Methyl-4-amino-5-aminomethylpyrimidine carbonate

HRID 2248073

Reaktionsgleichung

Reaktionsgleichung von HRID 2248073
[CH3:1][C:2]1[N:7]=[C:6]([NH2:8])[C:5]([CH2:9][NH2:10])=[CH:4][N:3]=1.[C:11](=[O:13])=[O:12].C([OH:17])(C)C>>[C:11](=[O:17])([OH:13])[OH:12].[CH3:1][C:2]1[N:7]=[C:6]([NH2:8])[C:5]([CH2:9][NH2:10])=[CH:4][N:3]=1

Komponenten

4

Edukt 3

HCID 280Carbon DioxideHCID 3776IsopropanolHCID 667624-Amino-2-methyl-5-pyrimidinemethanamine

Produkt 1

HCID 179918792-Methyl-4-amino-5-aminomethylpyrimidine carbonateAusbeute 90,3 %

Reaktionsbedingungen

Temperatur
10 °C

Versuchsvorschrift

Into the same four-necked flask as used in Example 1 was charged a solution of 30.0 g (purity: 96.2 %, 0.209 mole) of crude 2-methyl-4-amino-5-aminomethylpyrimidine dissolved in 300 g of isopropanol, followed by maintaining the temperature of the solution at 10° C. Subsequently, 44 g (1 mole) of carbon dioxide was blown into the solution over about 2 hours and the reaction was carried out to precipitate a white crystal of 2-methyl-4-amino-5-aminomethylpyrimidine carbonate with extreme easiness. Then, the resulting crystal was filtered off, washed with a small amount of isopropanol, and dried in vacuo at 20° C. until it may have constant weight to obtain 37.8 g of 2-methyl-4-amino-5-aminomethylpyrimidine carbonate.

Aufarbeitung

  1. customto precipitate a white crystal of 2-methyl-4-amino-5-aminomethylpyrimidine carbonate with extreme easiness
  2. filtrationThen, the resulting crystal was filtered off
  3. washwashed with a small amount of isopropanol
  4. customdried in vacuo at 20° C. until it

Quellen und Nachweise

ORD-Eintrag
ord-f40c41a4443949c4badc3c0ca9f5c6d3
Quelldatensatz
uspto-grants-1991_08
Patentnummer
US05037982

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