Glyoxylic Acid → 4-Amino-3-sulfanyl-4,5-dihydro-1,2,4-triazin-5-one
Reaktionsgleichung
[C:1]([OH:5])(=O)[CH:2]=O.[NH2:6][NH:7][C:8]([NH:10][NH2:11])=[S:9]>O>[NH2:6][N:7]1[C:1](=[O:5])[CH:2]=[N:11][NH:10][C:8]1=[S:9]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 22 parts glyoxylic acid in 22 parts water is slowly added to a hot, stirred solution of 32 parts thiocarbohydrazide in 350 parts water. The resulting mixture is refluxed until no further precipitate is formed. Upon cooling, essentially pure 4-amino-2,3-dihydro-3-thiono-as-triazin-5(4H)-one having a melting point of 211°-215° C. is obtained by filtration.
Aufarbeitung
- temperatureThe resulting mixture is refluxed until no further precipitate
- customis formed
- temperatureUpon cooling
Quellen und Nachweise
- ORD-Eintrag
- ord-7c3be85c692f4eab9ae18d1027611f2f
- Quelldatensatz
- uspto-grants-1982_08
- Patentnummer
- US04346220
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