HALOALKENIC ACID AMIDE DERIVATIVE, ITS PREPARATION, AND HERBICIDE CONTAINING IT
NEW MATERIAL:A compound shown by the formulaI(R is methyl or ethyl; R is butyl or cycloalkyl; X is Cl or Br; Y is Cl or methyl; Z is O or S; n is 0-2). USE:A herbicide. Showing improved activity against harmful weeds in a paddy filed, or a plowed field. A herbicide exhibiting a herbicidal effect by...
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Zusammenfassung: | NEW MATERIAL:A compound shown by the formulaI(R is methyl or ethyl; R is butyl or cycloalkyl; X is Cl or Br; Y is Cl or methyl; Z is O or S; n is 0-2). USE:A herbicide. Showing improved activity against harmful weeds in a paddy filed, or a plowed field. A herbicide exhibiting a herbicidal effect by its small amount, having high safety free from problems of environmental pollution. Effective a wide range of weeds, especially gramineous weeds, polygonums, etc. An application amount is 1-600g, preferably 50-500g based on 10 are calculated as effective component. PROCESS:An acid chloride shown by the formula II is reacted with a methylene imine shown by the formula R1N=CH2 and a phenol shown by the formula III in the presence of a base (e.g., sodium hydroxide, potassium carbonate, triethylamine, etc.) at -20-100 deg.C for 0.5-30hr, to give a compound shown by the formulaI. |
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