申请人:Tamai Ryuji
公开号:US20100197674A1
公开(公告)日:2010-08-05
The present invention is to provide an oxopyrazine derivative having an excellent herbicidal activity and besides exhibiting high safety for useful crops and the like, or a salt thereof, and a herbicide containing the same.
The present invention relates to an oxopyrazine derivative represented by formula [I]:
wherein X
1
represents an oxygen atom or a sulfur atom; X
2
represents CH or N(O)
m
; m represents an integer of 0 or 1; R
1
represents a hydrogen atom, a C
1
-C
12
alkyl group and the like; R
2
represents a halogen atom, a cyano group and the like; R
3
is a hydroxyl group, a halogen atom and the like; A
1
represents C(R
4
R
5
); A
2
represents C(R
6
R
7
) or C═O; A
3
represents C(R
8
R
9
); R
4
to R
9
represent a hydrogen atom or an alkyl group,
or a salt thereof, and a herbicide containing these compounds.
本发明提供了一种具有优异除草活性且对有用作物等具有高安全性的氧杂吡嗪衍生物或其盐,以及含有该衍生物的除草剂。本发明涉及一种由式[I]表示的氧杂吡嗪衍生物,其中X1代表氧原子或硫原子;X2代表CH或N(O)m;m代表0或1的整数;R1代表氢原子、C1-C12烷基等;R2代表卤素原子、氰基等;R3代表羟基、卤素原子等;A1代表C(R4R5);A2代表C(R6R7)或C═O;A3代表C(R8R9);R4到R9代表氢原子或烷基,或其盐,以及含有这些化合物的除草剂。