申请人:The Dow Chemical Company
公开号:US04565568A1
公开(公告)日:1986-01-21
Certain novel pyridinyloxyphenoxy alkanoic acids, pyridinylthiophenoxy alkanoic acids, derivatives thereof and related compounds are described. More specifically, these novel compounds bear a fluorine substituent in the 3-position of the pyridinyl group and in the 5-position the substituent is selected from chlorine, CF.sub.3, CF.sub.2 Cl or CF.sub.2 H. These novel compounds exhibit surprising preemergent and postemergent activity in the control of grassy weeds.
描述了一些新颖的吡啶氧基苯氧丙酸、吡啶基硫氧基丙酸、其衍生物和相关化合物。更具体地说,这些新颖化合物在吡啶基的3-位置带有氟取代基,在5-位置的取代基可选择为氯、CF.sub.3、CF.sub.2 Cl或CF.sub.2 H。这些新颖化合物在控制草本杂草方面表现出令人惊讶的前期和后期活性。