PRODUCTION OF BROMOFLUOROBENZENES

PRODUCTION OF BROMOFLUOROBENZENES

PURPOSE:To sufficiently advance denitrating and brominating reactions and industrially and advantageously produce bromofluorobenzenes by reacting fluoronitrobenzenes with bromine gas under prescribed conditions. CONSTITUTION:Fluoronitrobenzenes (e.g. 2,4-difluoronitrobenzene) are reacted with bromin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NASU RIKUO, HAMAGUCHI MOTOHIKO
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:PURPOSE:To sufficiently advance denitrating and brominating reactions and industrially and advantageously produce bromofluorobenzenes by reacting fluoronitrobenzenes with bromine gas under prescribed conditions. CONSTITUTION:Fluoronitrobenzenes (e.g. 2,4-difluoronitrobenzene) are reacted with bromine gas in the vapor phase at 250-400 deg.C to afford bromofluorobenzenes (e.g. 1-bromo-2,4-difluorobenzene). A high yield can be attained by the aforementioned method. The bromofluorobenzenes are useful as an intermediate for medicines, agricultural chemicals, etc.