申请人:Ciba-Geigy Corporation
公开号:US04685961A1
公开(公告)日:1987-08-11
Novel substituted N-sulfonyl-N'-pyrimidinylureas or N-sulfonyl-N'-triazinylureas of the formula I ##STR1## have good pre- and postemergence selective herbicidal and growth regulating properties. In this formula E is nitrogen or --CH.dbd., the group ##STR2## is a phenyl, naphthyl, furyl, thiophenyl, pyrrole or pyridinyl radical which is substituted in accordance with the definitions of R.sup.1 and R.sup.2, R.sup.3 and R.sup.4 are hydrogen, lower alkyl or lower alkoxy, or one of R.sup.3 and R.sup.4 may also be halogen, lower alkenyl, lower haloalkenyl, lower haloalkoxy, amino, lower alkylamino, --CH(OCH.sub.3).sub.2, a cyclised ketal group or a saturated 5- to 7-membered heterocycle which is bound through the nitrogen atom, R.sup.5 is hydrogen, lower alkyl, lower haloalkyl, or an unsubstituted or substituted phenyl, benzyl or naphthyl radical, and R.sup.6 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.
化合物I的结构式为N-磺酰基-N'-嘧啶基脲或N-磺酰基-N'-三嗪基脲,具有良好的前期和后期选择性除草和生长调节性能。在该结构式中,E代表氮或--CH.dbd.,##STR2##基团为苯基、萘基、呋喃基、噻吩基、吡咯基或吡啶基,根据R^1和R^2的定义进行取代,R^3和R^4为氢、低烷基或低烷氧基,或者R^3和R^4中的一个也可以是卤素、低烯基、低卤代烯基、低卤代氧基、氨基、低烷基氨基、--CH(OCH_3)_2、环化的缩酮基团或通过氮原子结合的饱和的5-到7-成员杂环,R^5为氢、低烷基、低卤代烷基,或未取代或取代的苯基、苄基或萘基基团,R^6为通过硫或磺酰基结合的烷基、酰基或酰胺基团,并根据描述进行定义,或者是通过氮原子结合的5-到7-成员杂环氨基基团。这些化合物特别适用于在谷物作物中有选择性地控制杂草。