Process for the preparation of polyhalogenphenyl carbamates

Process for the preparation of polyhalogenphenyl carbamates

The invention concerns a new process for the preparation of polyhalogenphenyl carbamates of the formula (I) R2-OCONHR1 (I) wherein R1 is alkyl, aralkyl or aryl, where the aromatic rings may optionally be substituted; and R2 is phenyl substituted with three, four or five halogens, through intermediat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BITTER, ISTVAN, SOOS, RUDOLF, TOTH, GEZA, TOEKE, LASZLO, SZABO, GABOR
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention concerns a new process for the preparation of polyhalogenphenyl carbamates of the formula (I) R2-OCONHR1 (I) wherein R1 is alkyl, aralkyl or aryl, where the aromatic rings may optionally be substituted; and R2 is phenyl substituted with three, four or five halogens, through intermediates of the formula (IV) (R2-O)2C=NR1 (IV) wherein R1 and R2 are as defined above. The compounds of the formula (I) are valuable acylating agents. The intermediates of the formula (IV) are new compounds, which are also encompassed by the invention.