申请人:E.I. DU PONT DE NEMOURS AND COMPANY
                            
                            
                                公开号:EP0497453A1
                            
                            
                                公开(公告)日:1992-08-05
                            
                            
Compounds of Formulae I, II, III and IV:
 wherein
   R¹ is alkyl;
   R² is H, alkyl, alkenyl or alkynyl;
   R³ and R⁴ are independently H, optionally substituted alkyl, alkenyl or alkynyl;
   X is selected from various organic groups; and
   Q is selected from various aryl and heterocyclic groups;
   exhibit broad spectrum preemergent and postemergent herbicidal activity.
                            式 I、II、III 和 IV 的化合物:
 其中
R¹ 是烷基
R² 是 H、烷基、烯基或炔基;
R³ 和 R⁴ 独立地为 H、任选取代的烷基、烯基或炔基;
X 选自各种有机基团;以及
Q 选自各种芳基和杂环基团;
具有广谱的芽前和芽后除草活性。