发明公开
EP0537423A1 N-pyrazolyl-1,2,4-triazolo(1,5-c)pyrimidine-2-sulfonamide herbicides
失效
N-吡唑基-1,2,4-三唑并（1,5-c）的嘧啶-2-磺酰胺，Herbizide。
- 专利标题： N-pyrazolyl-1,2,4-triazolo(1,5-c)pyrimidine-2-sulfonamide herbicides
- 专利标题（中）： N-吡唑基-1,2,4-三唑并（1,5-c）的嘧啶-2-磺酰胺，Herbizide。
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申请号： EP92112168.7申请日： 1992-07-16
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公开(公告)号： EP0537423A1公开(公告)日： 1993-04-21
- 发明人: Costales, Mark J. , Van Heertum, John C. , Kleschick, William A. , Ehr, Robert J. , Ray, Patricia G.
- 申请人： DowElanco
- 申请人地址： 9002 Purdue Road Indianapolis, Indiana 46268-1189 US
- 专利权人： DowElanco
- 当前专利权人： DowElanco
- 当前专利权人地址： 9002 Purdue Road Indianapolis, Indiana 46268-1189 US
- 代理机构： Huber, Bernhard, Dipl.-Chem.
- 优先权： US733048 19910719
- 主分类号： C07D487/04
- IPC分类号： C07D487/04 ; A01N43/90
摘要：
N-(3-, 4-, and 5-)-pyrazolyl-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamide compounds of formula (I),
substituted on the pyrimidine ring with an alkoxy group and on the pyrazine ring, such as N-(4-bromo-1-methylpyrazol-3-yl)-7-chloro-5-methoxy-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamide, were prepared from alkoxy substituted 1,2,4-triazolo[1,5-c] pyrimidine-2-sulfonyl halides by condensation with substituted (3-, 4-, and 5-aminopyrazoles in the presence of a pyridine base and a catalytic amount of dimethyl sulfoxide. The compounds were found to possess general and, in some cases, selective pre- and postemergence herbicidal activity.
substituted on the pyrimidine ring with an alkoxy group and on the pyrazine ring, such as N-(4-bromo-1-methylpyrazol-3-yl)-7-chloro-5-methoxy-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamide, were prepared from alkoxy substituted 1,2,4-triazolo[1,5-c] pyrimidine-2-sulfonyl halides by condensation with substituted (3-, 4-, and 5-aminopyrazoles in the presence of a pyridine base and a catalytic amount of dimethyl sulfoxide. The compounds were found to possess general and, in some cases, selective pre- and postemergence herbicidal activity.
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