| 摘要 |
<p>Herbicidal sulfonylureas Novel substituted N-sulfonyl-N'-pyrimidinylureas or N-sulfonyl-N'-triazinylureas of the formula I (I) have good pre- and postemergence selective herbicidal and growth regulating properties. In this formula E is nitrogen or -CH=, the group is a phenyl, naphthyl, furyl, thiophenyl, pyrrole or pyridinyl radical which is substituted in accordance with the definitions of R1 and R2, R3 and R4 are hydrogen, lower alkyl or lower alkoxy, or one of R3 and R4 may also be halogen, lower alkenyl, lower haloalkenyl, lower haloalkoxy, amino, lower alkylamino, -CH(OCH3)2, a cyclised ketal group or a saturated 5- to 7-membered heterocycle which is bound through the nitrogen atom, R5 is hydrogen, lower alkyl, lower haloalkyl, or an unsubstituted or substituted phenyl, benzyl or naphthyl radical, and R6 is an alkyl, acyl or acylamido radical which is bound through sulfur or a sulfinyl or sulfonyl group and is as defined in the description, or is a 5-to 7-membered heterocyclic amino radical which is bound through the nitrogen atom. These compounds are particularly suitable for selectively controlling weeds in crops of cereals.</p> |
