Process for producing a 6-subsitituted 2(1H)-quinoxalinone

Process for producing a 6-subsitituted 2(1H)-quinoxalinone

PCT No. PCT/JP95/00173 Sec. 371 Date Aug. 13, 1996 Sec. 102(e) Date Aug. 13, 1996 PCT Filed Feb. 8, 1995 PCT Pub. No. WO95/22531 PCT Pub. Date Aug. 24, 1995A process for producing a 6-substituted 2(1H)-quinoxalinone of the formula (I): (I) wherein X is a halogen atom, a trihalogeno-substituted C1-5...

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Bibliographische Detailangaben
Hauptverfasser: HATANAKA, MASATAKA, HASHIBA, ISAO
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:PCT No. PCT/JP95/00173 Sec. 371 Date Aug. 13, 1996 Sec. 102(e) Date Aug. 13, 1996 PCT Filed Feb. 8, 1995 PCT Pub. No. WO95/22531 PCT Pub. Date Aug. 24, 1995A process for producing a 6-substituted 2(1H)-quinoxalinone of the formula (I): (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): (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.