申请人:Hoffmann-La Roche Inc.
公开号:US04329488A1
公开(公告)日:1982-05-11
Propionic acid esters of the general formula ##STR1## wherein R.sub.1 is hydrogen, alkyl of from 1 to 6 carbon atoms or phenyl, R.sub.2 is alkyl of from 1 to 6 carbon atoms, alkenyl of from 2 to 6 carbon atoms, alkynyl of from 2 to 6 carbon atoms or phenyl, or R.sub.1 and R.sub.2 together with the carbon atom to which they are attached form a cycloalkane ring containing 4 to 10 carbon atoms which can be mono-, di- or trisubstituted with alkyl of from 1 to 3 carbon atoms, R.sub.3 represents a halogen, trifluoromethyl or nitro, and R.sub.4 and R.sub.5 each represent a hydrogen or halogen atom, processes for their manufacture, herbicidal compositions containing these compounds as the active ingredient and methods of use of the herbicidal compositions are disclosed.
通用公式##STR1##中的丙酸酯,其中R.sub.1是氢,1至6个碳原子的烷基或苯基,R.sub.2是1至6个碳原子的烷基,2至6个碳原子的烯基,2至6个碳原子的炔基或苯基,或者R.sub.1和R.sub.2与它们连接的碳原子一起形成一个含有4至10个碳原子的环烷烃环,该环可以是单取代、双取代或三取代的,取代基为1至3个碳原子的烷基,R.sub.3代表卤素、三氟甲基或硝基,R.sub.4和R.sub.5各自代表氢或卤素原子,公开了其制备方法、含有这些化合物作为活性成分的除草剂组合物以及除草剂组合物的使用方法。