SUBSTITUTED PHENYL CARBONATE DERIVATIVE

PURPOSE: To obtain a compound useful as a synthetic intermediate for an N- substituted phenyl-3,4,5,6-tetrahydrophthalimide derivative having excellent herbicidal activities. CONSTITUTION: This compound of formula I (R is a 1-6C alkyl; X is a halogen; Y is H, nitro or amino), e.g. 2-chloro-4-fluorop...

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Bibliographische Detailangaben
Hauptverfasser:	EJIRI EMIKO, ONCHI YUICHI, HARASAWA KIKUKO, HIRAI KENJI, UKAI SADAYUKI, TATENO TOMOKO, YAMASHITA MITSUO, NAGATO SHOIN
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HUMAN NECESSITIES HUNTING METALLURGY ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain a compound useful as a synthetic intermediate for an N- substituted phenyl-3,4,5,6-tetrahydrophthalimide derivative having excellent herbicidal activities. CONSTITUTION: This compound of formula I (R is a 1-6C alkyl; X is a halogen; Y is H, nitro or amino), e.g. 2-chloro-4-fluorophenyl(isobutyl) carbonate. The compound of formula I is obtained by reacting 2-chloro-4-fluorophenol of formula II with an alkyl chloroformate (e.g. isobutyl chloroformate). A nitrobenzene derivative is further obtained by subsequently nitrating the resultant compound with fuming nitric acid, etc. The prepared nitrobenzene derivative is reduced in the presence of hydrogen by using a Pd/C catalyst to afford an aniline derivative. An N-substituted phenyl-3,4,5,6-tetrahydrophthalimide derivative has high herbicidal effects in a low dose and hardly causes the phytotoxicity to main crops.