The invention provides novel phenylurea of formula I ##STR1## wherein R.sub.1 is H or CHO, R.sub.2 is H, CH.sub.3 or OCH.sub.3 R.sub.3 is a group G.sub.1 of the formula ##STR2## or a group G.sub.2 of the formula CH(CH.sub.3)CH.sub.2 Y in which Y is halogen selected from Cl or F or is CH.sub.3 O and X is H or halogen selected from Cl or Br, the use of these novel compounds as herbicides, compositions for facilitating such use and the preparation of the novel phenylurea.
该发明提供了式I的新型苯基
脲化合物:##STR1## 其中R.sub.1为H或CHO,R.sub.2为H、CH.sub.3或OCH.sub.3,R.sub.3是G.sub.1的基团,其式为##STR2## 或是G.sub.2的基团,其式为CH(CH.sub.3)CH.sub.2 Y,其中Y为选择自Cl或F的卤素或为CH.sub.3 O,X为H或选择自Cl或Br的卤素,这些新型化合物可用作
除草剂,用于促进这种使用的组合物以及新型苯基
脲的制备。