| 摘要 |
Novel heterocyclylalkyl esters of 2-imidazolinonenicotinic acids of formula I below have good selective herbicidal properties pre- and postemergence and also influence or inhibit plant growth. The novel esters have the formula I <IMAGE> (I) wherein A is a straight chain or branched C1-C4alkylene bridge, X and Y are each independently of the other hydrogen, C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy or halogen, or X and Y together form the butadiene bridge, which may be substituted by halogen, cyano or C1-C4alkyl, and Het is a 5- or 6-membered heterocycle which contains one to three nitrogen atoms and/or one oxygen or sulfur atom and which may further contain one or two carbonyl groups, which heterocycle may also be fused to benzene rings and/or substituted by halogen, C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy, C1-C3haloalkoxy, nitro, amino, C1-C3alkylamino or di(C1-C3)alkylamino.
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