HERBIZIDE MITTEL ERHOEHTER SELEKTIVITAET UND VERFAHREN ZU SELEKTIVEN BEKAEMPFUNG VON UNKRAEUTERN

PURPOSE: To obtain a herbicide excellent in selectivity, containing a 5-(substituted phenoxy)-2-nitrobenzaldehyde and a 5-(substituted phenoxy)-2 nitrobenzaldehyde diacetate. CONSTITUTION: This herbicide comprises a compound of formula I (X is H or Cl) and a compound of formula II in the ratio of (5...

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Main Authors GEBHARDT,ISTVAN,HU, HADOBAS,EDIT,HU, BAKOS,JOZSEF,HU, BIHARI,FERENC,HU, EIFERT,GYULA,HU, LUKACS,LASZLO,HU, HEIL,BALINT,HU, TIMAR,JUDIT,HU, SZOTYORI,LASZLO,HU, DURKO,ANNA,HU, SAROSI,LAJOS,HU
Format Patent
LanguageGerman
Published 23.08.1989
Edition4
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:PURPOSE: To obtain a herbicide excellent in selectivity, containing a 5-(substituted phenoxy)-2-nitrobenzaldehyde and a 5-(substituted phenoxy)-2 nitrobenzaldehyde diacetate. CONSTITUTION: This herbicide comprises a compound of formula I (X is H or Cl) and a compound of formula II in the ratio of (50:1) to (1:50), preferably (20:1) to (1:1) by weight. The mixture of the compounds is obtained by reacting 1mol of a 5-(substituted phenoxy)-2-nitrobenzaldehyde of formula III by using a nitrating agent comprising 4-11mol of acetic anhydride, 1.2-2.6mol of nitric acid and 0.1-2.8mol of sulfuric acid in the presence of a solvent (preferably dichloromethane) at a room temperature or a lower temperature and by separating from the reaction mixture by a wellknown method. A mixture of both the compounds in a desired ratio can be obtained by selecting the molar ratio of the reaction composition.
Bibliography:Application Number: DD19880316838