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(11)    Patent No :    AP 2513   
(21)    Application No :    AP/P/2009/005066   
(22)    Filing Date :    31.07.2008   
(24)    Date of Grant &    22.11.2012   
           
(45)    Publication :

(30)  Priority Data           
(33) Country    (31)    Number    (32) Date
JP    2007    -201387    01.08.2007
(84)    Designated State

BW    GM    GH    KE    LS    MW  MZ   NA   SL
SD    SZ    T Z    UG    ZM    ZW
 

(73) Applicant(s)

KUMIAI CHEMICAL INDUSTRY CO.,LTD, 4 -26, Ikenohata

1-chome, Taito-ku, Tokyo 110-8782,
Japan

IHARA CHEMICAL INDUSTRY CO. LTD, 4-26, Ikenohata
1-Chome, Taito-ku, Tokyo 110-0008,

Japan

(72) Inventors

TAMAI Ryuji, Japan

ITO Minoru, Japan

KOBAYASHI Masami, Japan

et al

(74) Representative

FISHER CORMACK & BOTHA
 

(51)    International  Classification   C07D 241/44 (2006.01)    A01N 43/60 (2006.01)
    A01N 43/653 (2006.01)    A01N 43/66 (2006.01)
    A01N 43/80 (2006.01)    A01N 43/84 (2006.01)
    A01N 43/90 (2006.01)    A01N 47/02 (2006.01)
    A01P 13/00 (2006.01)    C07D 471/04 (2006.01)
(54)    Title   

Oxopyrazine derivative and herbicide

(57)    Abstract

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 X1 represents an oxygen atom or a sulfur atom; X2 represents CH or N(0)m; m represents an integer of 0 or 1; R1 represents a hydrogen atom, a C1-C12 alkyl group and the like; R2 represents a halogen atom, a cyano group and the like ; R3 is a hydroxyl group, a halogen atom and the like; A1 represents C(R4R5); A2 represents C(R6R7) or C=O; A3 represents C(R8R9); R4 to R9 represent a hydrogen atom or an alkyl group, or a salt thereof, and a herbicide containing these compounds

(56)    Documents Cited :    EP 283261 A2    AHMAD, A.R et al.    JP 50-29583 A

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