申请人:KUMIAI CHEMICAL INDUSTRY CO., LTD.
公开号:EP0881223A1
公开(公告)日:1998-12-02
A benzofuran-7-yl uracil derivative represented by the general formula (1):
(wherein each of X and Y is a hydrogen atom, a halogen atom or the like, R1 is a hydrogen atom, an alkyl group or the like, R2 is a haloalkyl group or the like, R3 is a hydrogen atom, a halogen atom or the like, each of R4 and R5 which are independent of each other, is a hydrogen atom, an alkyl group, a haloalkyl group, a halogen atom, a cyano group, a phenyl group, a benzyl group, a nitro group or the like), and a herbicide containing it as an active ingredient.
The compound of the present invention represented by the general formula (1) exhibits excellent herbicidal effects against various weeds which cause trouble in upland fields, such as, broad leaved weeds, gramineous weeds and perennial or annual cyperaceous weeds, over a wide range from the pre-emergence to the growing stage. It can further control annual weeds and perennial weeds growing in paddy fields.
On the other hand, the herbicide of the present invention is highly safe to crop plants and shows high safety especially to rice, wheat, barley, sorghum, corn, soybean, cotton and sugar beet.
由通式(1)代表的苯并呋喃-7-基尿嘧啶衍生物:
(其中X和Y各自为氢原子、卤素原子或类似物,R1为氢原子、烷基或类似物,R2为卤代烷基或类似物,R3为氢原子、卤素原子或类似物,相互独立的R4和R5各自为氢原子、烷基、卤代烷基、卤素原子、氰基、苯基、苄基、硝基或类似物),以及含有它作为活性成分的除草剂。
由通式(1)表示的本发明化合物在从萌发前到生长期的广泛范围内,对造成高地田间问题的各种杂草,如阔叶杂草、禾本科杂草和多年生或一年生的香附子属杂草,具有极佳的除草效果。它还能进一步控制水田中生长的一年生杂草和多年生杂草。
另一方面,本发明的除草剂对作物高度安全,尤其是对水稻、小麦、大麦、高粱、玉米、大豆、棉花和甜菜。