| 摘要 |
<p>The invention relates to imidazolinyl benzamides and a method for the preparation thereof. The invention also relates to a method for the control of undesirable plant species by the application of a herbicidally effective amount of an imidazolinyl benzamide to the foliage of the undesirable plants or to soil containing seeds or other propagating organs of the plants. The compounds of the invention have the structure wherein X is hydrogen, alkyl C1-C3, halogen or nitro; R1 is alkyl C1-C4; R2 is alkyl C1-C6, cycloalkyl C3-C6, alkenyl C2-C4, phenyl, halophenyl or benzyl or when R1 and R2 are taken together with the carbon to which they are attached they may represent cycloalkyl C3-C6 optionally substituted with methyl; R3 is hydrogen, alkyl C1-C12 optionally substituted with one C1-C3 alkoxy group or one C3-C6 cycloalkyl group or one phenyl group or one furyl group, alkenyl C3-C5 optionally substituted with one or two C1-C3 alkyl group(s) or one phenyl group or with one to two halogen substituent; alkynyl C3-C5 optionally substituted with one or two C1-C3 alkyl group(s) or one phenyl group or with one to two halogen substituent(s), benzyl, cyclohexenylmethyl, ethynylcyclohexyl, ethynylallyl or pentadienyl, cycloalkyl C3-C6 optionally substituted with one or two C1-C3 alkyl group(s); or a salt-forming cation of alkali metals, ammonium and aliphatic ammonium; and when R1 and R2 are not the same the optical isomers thereof, and the isomeric mixtures thereof; and except when R3 is a salt-forming cation, the acid addition salts thereof.</p> |
