1,3-dimethyl-5-methoxypyrazole 、 氯化亚砜 、 、 氯磺酸 反应 10.5h,
以whereby crude 1,3-dimethyl-5-methoxy-pyrazole-4-sulfonylchloride was formed as crystals The crystals的产率得到5-Methoxy-1,3-dimethyl-1H-pyrazole-4-sulfonyl chloride
Pyrazolesulfonylurea derivative, preparation thereof, herbicide containing said derivative as active ingredient and herbicidal method by use thereof
申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0087780A2
公开(公告)日:1983-09-07
Disclosed is a novel pyrazolesulfonylurea derivative represented by the formula (I), preparation thereof, a herbicide containing said derivative as an active ingredient and a herbicidal method by use thereof.
(wherein A, B, C, D, X, Y and Z are as defined in the specification)
本发明公开了一种由式(I)表示的新型吡唑磺酰脲衍生物、其制备方法、一种含有上述衍生物作为活性成分的除草剂以及使用该衍生物的除草方法。
(其中 A、B、C、D、X、Y 和 Z 如说明书中所定义)