X is O or S;
n is 0 or 1;
R is H, Cl, F, Br, CH₃, OCH₃ or OCH₂CH₃;
R is C₁-C₃ alkyl, allyl or propargyl;
R₂ is X₁R₈ or OH;
R₃ is Cl, F, Br or CF₃;
R₄ is H, Cl, F or Br;
R₅ is CF₃;
R₆ is H or Cl;
R₇ is H, Cl, F, Br or CF₃;
R₈ is an organic group of defined structure;
X₁ is O or S;
and their agriculturally suitable salts, exhibit herbicidal activity, especially for the control of weeds in rice.
X 是 O 或 S
n 是 0 或 1;
R 是 H、Cl、F、Br、CH₃、OCH₃ 或 OCH₂CH₃;
R₁-C₃ 烷基、烯丙基或
丙炔基;
R₂ 是 X₁R₈ 或 OH;
R₃ 是 Cl、F、Br 或 CF₃;
R₄ 是 H、Cl、F 或 Br;
R₅ 是 CF₃;
R₆ 是 H 或 Cl;
R₇ 是 H、Cl、F、Br 或 CF₃;
R₈ 是定义结构的有机基团;
X₁ 是 O 或 S;
及其农业上适用的盐类具有除草活性,特别是在控制
水稻杂草方面。