PYRAZOLE DERIVATIVE, AND HERBICIDE CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

NEW MATERIAL:The compound of formula 1 (X is halogen or lower alkyl; Y is lower alkyl; X and Y may together form a 3-6C methylene ring; R1 is H, halogen or lower alkyl; R2 is H, halogen lower alkyl, CN or lower alkoxy; R3 is halogen). EXAMPLE:1-(2-Fluoro-4-chloro-5-nitrophenyl)-3,4-dimethyl-5-chloro...

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Bibliographic Details
Main Authors YANAGI MIKIO, NITANI FUMIO, KAWADA SHUJI, KOBAYASHI KENJI
Format Patent
LanguageEnglish
Published 26.07.1986
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES
CHEMISTRY
FISHING
FORESTRY
HETEROCYCLIC COMPOUNDS
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:The compound of formula 1 (X is halogen or lower alkyl; Y is lower alkyl; X and Y may together form a 3-6C methylene ring; R1 is H, halogen or lower alkyl; R2 is H, halogen lower alkyl, CN or lower alkoxy; R3 is halogen). EXAMPLE:1-(2-Fluoro-4-chloro-5-nitrophenyl)-3,4-dimethyl-5-chloropyraz ole. USE:A practical herbicide having strong herbicidal activity and low phytotoxicity to crops. PREPARATION:The compound of formula 1 can be prepared either by reacting the compound of formula 2 with a halogenation agent or by reacting the compound of formula 3 with a nitration agent. The compound of formula 2 is obtained by dehydrating the compound of formula 4 (R5 is lower alkyl) and the compound of formula 5 (R4 is H or NO2) in a proper inert solvent under refluxing.
Bibliography:Application Number: JP19850003956