| 摘要 |
<p>This invention concerns certain 3-¢substituted 3- or 5-isoxazolyl!-1-4- or 5-substituted-2 imidazolidinones having herbicidal activity, their method of preparation, and the control of weeds therewith. The compounds are represented by the formula wherein- A is R or R wherein R is alkyl or haloalkyl of up to 6 carbon atoms; cycloalkyl of from 3 to 8 carbon atoms; alkenyl or alkynyl of up to 5 carbon atoms; -R4-0-R5 or -R4-S-R5 wherein R4 is alkylene of up to 6 carbon atoms and R5 is alkyl of up to 6 carbon atoms; or Zn -R4 or Zn -0-R4 wherein Z is nitro, halogen, trifluoromethyl or R5, and n is 0, 1, 2, or 3; R1 is hydroxy, halogen or - 0 - ? - R6 wherein R6 is alkyl or haloalkyl of up to 9 carbon atoms; cycloalkyl of from 3 to 8 carbon atoms; alkenyl or alkynyl of up to 5 carbon atoms, or Zn wherein Z1 is nitro, halogen, trifluoromethyl, alkyl or alkoxy of up to 8 carbon atoms; and n is 0, 1, 2, or 3; R2 is hydrogen, hydroxy, alkyl of up to 4 carbon atoms, or allyl; and R3 is alkyl of up to 3 carbon atoms or allyl.</p> |
