Process for producing 6-substituted 2(1H)-quinoxalinone

Process for producing 6-substituted 2(1H)-quinoxalinone

A process for producing a 6-substituted 2(1H)-quinoxalinone of the formula (I): wherein X is a halogen atom, a trihalogeno-substituted C1-5 alkyl group or a nitro group, which comprises reacting a 6-substituted 2(1H)-quinoxalinone-N-oxide of the formula (II): wherein X is as defined above, with an a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ISAO HASHIBA, MASATAKA HATANAKA
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for producing a 6-substituted 2(1H)-quinoxalinone of the formula (I): wherein X is a halogen atom, a trihalogeno-substituted C1-5 alkyl group or a nitro group, which comprises reacting a 6-substituted 2(1H)-quinoxalinone-N-oxide of the formula (II): wherein X is as defined above, with an alkali metal hydrosulfide and/or an alkali metal sulfide in the presence of from 1 to 20 mol times of an alkali.