N-SUBSTITUTED HYDRAZINE DERIVATIVE AND HERBICIDE CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

• Main Authors: YANAGI MIKIO, YAMADA KURA, NITANI FUMIO, SHIDA ATSUHIKO, SHIMANO SHIZUO, KOBAYASHI SHINICHI
• Format: Patent
• Language: English
• Published: 19.03.1984
• 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

NEW MATERIAL:The N-substituted hydrazine derivative of formula I (R1 is H or halogen; R2 is halogen; R3 is H or 1-8C straight or branched-chain alkyl which may be substituted with lower alkoxy; R4 is lower alkyl; X is O or S; n is 3-6). EXAMPLE:1, 2-Trimethylene-1-ethoxycarbonyl-2-( 2-fluoro-4-chloro-5-ethoxy-carbonylphenylcarbamoyl)-hydrazine. USE:Useful as a herbicide effective at a low dose against the annual weeds such as Deccan grass and broad-leaved weeds, etc. and perennial weeds such as flatstage in paddy field, and broad-leaved weeds of Amaranthaceae family, Chenopodiaceae family etc. in the plowed land. It has no phytotoxicity to rice plant, wheat, soybean, etc. PROCESS:The compound of formula I can be prepared, e.g. by reacting the N , N -alkylene-N -alkoxycarbonylhydrazine compound of formula II with the compound of formula III.