申请人:Bayer Aktiengesellschaft
公开号:US05250498A1
公开(公告)日:1993-10-05
A method of combating unwanted vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation, a herbicidally effective amount of a 2-iminopyridine of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another represent hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio or halogenalkylthio, R.sup.5' represents cyano, alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl, halogenoalkylcarbonyl, halogenoalkenylcarbonyl, halogenoalkynylcarbonyl, alkoxycarbonyl or alkylthiocarbonyl, or represents in each case optionally substituted phenylcarbonyl or phenoxycarbonyl, or represents alkylsulphonyl or optionally substituted phenylsulphonyl, or represents alkylaminocarbonyl or optionally substituted phenylaminocarbonyl, phenylalkylcarbonyl, phenylalkenylcarbonyl, furylcarbonyl, phenoxyalkylcarbonyl, thienylcarbonyl or pyridylcarbonyl, or represents cycloalkylcarbonyl, alkoxyalkylcarbonyl, alkylcarbonyloxyalkylcarbonyl, alkoxycarbonylcarbonyl or halogenalkylsulphonyl, A represents alkanediyl and Z represents optionally substituted aryl or optionally substituted hetaryl. Those compounds wherein R.sup.5-2 is not cyano are new.
一种对抗不受欢迎的植被的方法,包括向该植被或希望排除该植被的位置施加有效除草作用的2-咪唑啉化合物,其化学式为##STR1##其中R.sup.1,R.sup.2,R.sup.3和R.sup.4分别独立地表示氢,卤素,烷基,卤代烷基,烷氧基,卤代烷氧基,烷硫基或卤代烷硫基,R.sup.5'表示氰基,烷基羰基,烯基羰基,炔基羰基,卤代烷基羰基,卤代烯基羰基,卤代炔基羰基,烷氧羰基或烷硫羰基,或在每种情况下可选地取代的苯基羰基或苯氧基羰基,或表示烷基磺酰基或可选取代的苯基磺酰基,或表示烷基氨基羰基或可选取代的苯基氨基羰基,苯基烷基羰基,苯基烯基羰基,呋喃基羰基,苯氧基烷基羰基,噻吩基羰基或吡啶基羰基,或表示环烷基羰基,烷氧基烷基羰基,烷基羰氧基烷基羰基,烷氧基羰基羰基或卤代烷基磺酰基,A表示烷二基,Z表示可选取代的芳基或可选取代的杂芳基。其中R.sup.5-2不是氰基的化合物是新的。