C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 239/28 (2006.01) A01N 43/48 (2006.01) A01N 43/54 (2006.01) A01N 43/84 (2006.01) C07D 239/34 (2006.01) C07D 239/52 (2006.01) C07D 239/553 (2006.01) C07D 239/56 (2006.01) C07D 239/60 (2006.01) C07D 401/12 (2006.01) C07D 403/12 (2006.01) C07D 413/12 (2006.01) C07D 417/12 (2006.01)
Patent
CA 2107748
ABSTRACT OF THE DISCLOSURE A novel biphenyl derivative represented by the formula (I) Image (I) wherein R1 represents a hydrogen atom or a group represented by the formula Image (wherein each of R4 and R5 which may be the same or different, represents a hydrogen atom, a C1-C6 alkyl group, a C3-C8 cycloalkyl group, or a phenyl group optionally substituted with at least one member selected from the group consisting of C1- C6 alkyl groups, halogen atoms and C1-C6 alkoxy groups, or a benzyl group optionally substituted with at least one member selected from the group consisting of C1-C6 alkyl groups, halogen atoms and C1-C6 alkoxy groups, or R4 and R5 are bonded together at their ends to form a C4-C6 alkylene group optionally substituted with C1-C6 alkyl groups; or R4 and R5 are bonded together at their ends to form a C4-C6 alkylene group containing one or more hetero atoms selected from the group consisting of oxygen, sulfur and nitrogen atoms, optionally substituted with C?-C6 alkyl groups), each of R2 and R3, which may be the same or different, represents a C1-C6 alkyl group, a C1-C6 alkoxy group, a C1-C6 alkylthio group, a halo C1-C6 alkoxy group or a halogen atom, each of Xi, X2 and X3, which may be the same or different, represents a hydrogen atom, a hydroxyl group, a C1-C6 alkyl group, a halo C1-C6 alkyl group, a C1- C6 alkoxy group, a nitro group, a cyano group or a halogen atom and Y represents an oxygen atom or a sulfur atom; or agriculturally acceptable salts thereof; has an excellent herbicidal activity and excellent selectivity to crops with weeds and therefore, can be used as an active ingredient for herbicides.
Hirata Naonori
Hiratsuka Mitsunori
Saito Kazuo
Uekawa Toru
Yogai Hiroyuki
Marks & Clerk
Sumitomo Chemical Co. Ltd.
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