申请人:DowElanco
公开号:US05700940A1
公开(公告)日:1997-12-23
Substituted N-aryl\x9b1,2,4!triazolo\x9b1,5-a!pyridine-2-sulfonamide compounds, such as N-(2,6-difluorophenyl)-5-methoxy-7-methyl\x9b1,2,4!triazolo\x9b1,5-a!pyridine-2- sulfonamide, N-(4-bromo-1-methyl-3-pyrazolyl)-8-chloro-5-methoxy\x9b1,2,4!triazolo\x9b1,5-a!p yridine-2-sulfonamide, and N-(2-fluoro-4-methyl-3-pyridinyl)-8-ethoxy-6-chloro\x9b1,2,4!triazolo\x9b1,5-a!p yridine-2-sulfonamide, were prepared by condensation of a 2-chlorosulfonyl\x9b1,2,4!triazolo\x9b1,5-a!pyridine compound with an aryl amine. The compounds prepared were found to possess excellent herbicidal activity on a broad spectrum of vegetation at low application rates.
替代的N-芳基[1,
2,4]三唑[1,5-a]
吡啶-2-磺
酰胺化合物,例如N-(
2,6-二氟苯基)-5-甲
氧基-7-
甲基[1,
2,4]三唑[1,5-a]
吡啶-2-磺
酰胺,N-(4-
溴-
1-甲基-3-
吡唑基)-8-
氯-5-甲
氧基[1,
2,4]三唑[1,5-a]
吡啶-2-磺
酰胺和N-(2-
氟-4-
甲基-3-
吡啶基)-8-乙
氧基-6-
氯[1,
2,4]三唑[1,5-a]
吡啶-2-磺
酰胺,通过2-
氯磺酰[1,
2,4]三唑[1,5-a]
吡啶化合物与芳基胺缩合而成。发现所制备的化合物在低施用量下对广谱植被具有出色的除草活性。