| 摘要 |
Herbicidal 2-aryl-6-hetarylpyridines of the formula (I) in which R1 represents hydrogen, halogen, alkyl, alkoxy or halogenoalkyl, R2 represents hydrogen, halogen or halogenoalkyl, R3 and R4 independently of one another represent hydrogen or alkyl, Het represents in each case unsubstituted or substituted pyridyl, pyrazinyl, pyrrolyl, pyrazolyl, imidazolyl, thienyl, furyl, thiazolyl, isothiazolyl, oxazolyl or isoxazolyl, and Z represents hydrogen, halogen or the groups -Xn-R5-1 or , where Le A 27 559-US X represents oxygen or sulphur, R5-1 and R5-2 independently of one another represent in each case optionally substituted alkyl, alkenyl or alkynyl, R6 represents hydrogen or alkyl, or R5-2 and R6 together with the nitrogen atom to which they are bonded form a 5- to 7-membered saturated or unsaturated ring which optionally contains a further hetero atom and which is optionally substituted by 1 or 2 alkyl groups, and n represents 0 or 1, with certain exceptions. Le A 27 559
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