申请人:Bayer Aktiengesellschaft
公开号:US04810283A1
公开(公告)日:1989-03-07
Novel 1-aryl-4-nitro-pyrazoles which exhibit herbicidal and plant growth-regulating activity of the formula ##STR1## in which R.sup.1 represents in each case optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl and R.sup.2 represents hydrogen, or represents in each case optionally substituted alkyl, alkenyl, alkinyl or cycloalkyl, or represents a radical ##STR2## or R.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, represent a saturated heterocyclic radical, which can optionally contain further hetero atoms, and Ar represents in each case optionally substituted phenyl or pyridyl, wherein X represents oxygen or sulphur and R.sup.3 represents hydrogen, alkyl, alkoxy, alkoxy-alkyl, alkylthio, alkylthioalkyl, alkylamino, di-alkylamino, halogenoalkyl, alkenyl or alkinyl, or represents optionally substituted cycloalkyl, or represents optionally substituted aryl, or represents optionally substituted aryloxy, or represents optionally substituted arylthio, or represents optionally substituted arylamino, but wherein R.sup.2 only represents hydrogen or a radical ##STR3## if R.sup.1 does not simultaneously represent unsubstituted alkyl or represent alkyl which is substituted by an alkoximino radical.
这是一种化学式为##STR1##的杀草和植物生长调节活性的1-芳基-4-硝基吡唑类化合物,其中R.sup.1分别表示可选取代的烷基、烯基、炔基或环烷基,R.sup.2表示氢,或分别表示可选取代的烷基、烯基、炔基或环烷基,或表示基团##STR2##或R.sup.1和R.sup.2,与它们所连接的氮原子一起,代表饱和的杂环基团,该杂环基团可以包含进一步的杂原子,Ar分别表示可选取代的苯基或吡啶基,其中X表示氧或硫,R.sup.3表示氢、烷基、烷氧基、烷氧基烷基、烷硫基、烷硫基烷基、烷基氨基、二烷基氨基、卤代烷基、烯基或炔基,或表示可选取代的环烷基,或表示可选取代的芳基,或表示可选取代的芳氧基,或表示可选取代的芳硫基,或表示可选取代的芳基氨基,但是当R.sup.1同时不表示未取代的烷基或取代了烷氧基基团的烷基时,R.sup.2仅表示氢或基团##STR3##。