SUBSTITUTED 2-PHENYLPYRIDINE AS HERBICIDE

摘要

The present invention pertains to substituted 2-phenylpyridine I and the salts thereof of formula (I), where R1 = SH, SO2NH2, C1-C2-alkylthio, C1-C6-alkyl-sulfinyl, C1-C6-akylsulfonyl, C1-C6alkylaminosulfonyl, Di-(C1-C6alkyl)aminosulfonyl; R1, R3 = H, halogen; R4 = CN, OH, halogen, C1-C6-alkoxy, possibly substituted OCH2-phenyl and R5 have the meanings given in the description. The invention also relates to: the use of compounds (I) as herbicides or as plant dessicating/defoliating agents, the herbicides and the plant dessicating/defoliating agents containing compounds (I) as actives substances, the processes for controlling undesirable plant growth and for dessicating/defoliating plants using compounds (I), the processes for producing compounds (I), herbicides and plant dessicating/defoliating agents by compounds (I), as well as the intermerdiate products of formulae (IIa, V and VI).