HERBICIDE

NEW MATERIAL:An N-substituted-3,4,5,6-tetrahydrophthalamic acid derivative shown by the formula I (R1 is H, or halogen; R2 is halogen; R3 is H, or lower alkyl; R4 is H, or 1-8C alkyl; Z is 1-4C alkoxy-1-6C alkylamino). EXAMPLE:N-2-Methoxyethyl-N'- ( 4-chloro-2-fluoro-5-isopropoxy-carbonylphenyl...

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Bibliographic Details
Main Authors KOBAYASHI TAKANORI, YANAGI MIKIO, YAMADA KURA, NITANI FUMIO
Format Patent
LanguageEnglish
Published 29.09.1984
Subjects
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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Summary:NEW MATERIAL:An N-substituted-3,4,5,6-tetrahydrophthalamic acid derivative shown by the formula I (R1 is H, or halogen; R2 is halogen; R3 is H, or lower alkyl; R4 is H, or 1-8C alkyl; Z is 1-4C alkoxy-1-6C alkylamino). EXAMPLE:N-2-Methoxyethyl-N'- ( 4-chloro-2-fluoro-5-isopropoxy-carbonylphenyl )- 3,4,5,6-tetrahydrophathalamide. USE:A herbicide. Showing improved herbicidal effect on annual or perennial weeds with a small application amount of the herbicide. Having low phytotoxicity to crops. PREPARATION:A 3,4,5,6-tetrahydrophthalic anhydride shown by the formula II is reacted with a meta-aminobenzoic acid shown by the formula III or its ester in a solvent to give a compound shown by the formula IV, which is reacted with a dehydrating agent, and with an amine shown by the formula R5-NH2 (R5 is alkoxyalkyl), to give a compound shown by the formula I .
Bibliography:Application Number: JP19830044460