PREPARATION OF 4-AMINO-1.2.4-TRIAGOLE-5-ONE

PREPARATION OF 4-AMINO-1.2.4-TRIAGOLE-5-ONE

A process for the preparation of 4-amino-1,2,4-triazol-5-one of the formula (I) in which p0 R represents unsubstituted or substituted alkyl, alkenyl, cycloalkenyl, cycloalkyl, aralkyl, aryl or heterocyclyl, which comprises reacting a carbodihydrazide of the formula (II) with a nitrile of the formula...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LOTHAR, ROHE, KLAUS-HELMUT, MULLER, KLAUS, KOENIG
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for the preparation of 4-amino-1,2,4-triazol-5-one of the formula (I) in which p0 R represents unsubstituted or substituted alkyl, alkenyl, cycloalkenyl, cycloalkyl, aralkyl, aryl or heterocyclyl, which comprises reacting a carbodihydrazide of the formula (II) with a nitrile of the formula R-C 3BOND N (II) The carbodihydrazide of the formula (II) may be produced in a preliminary stage by reacting a carbonic acid derivative with hydrazine or hydrazine hydrate.