| 摘要 |
The invention relates to compounds of the formula
<CHEM>
R2 is C2-C5 alkenyl, C5-C6 cycloalkenyl or C2-C3 alkenyl substituted with 1-3 chlorine atoms;
n is 0 or 1;
R1 is H, F, Cl, Br, NO2, CF3, C1-C4 alkyl, OCF3 or C1-C3 alkoxy;
R5 and R6 are independently H or CH3;
A is
<CHEM>
X is H, CH3, OCH3, OCH2CH3, OCH2CF3, CH2OCH3 or Cl;
Y is CH3, OCH3, OCH2CH3, NH2, NHCH3 or N(CH3)2;
Z is N, CH, CCl, CBr, CCN, CCH3, CCH2CH3, CCH2CH2Cl or CCH2CH-CH2;
Y1 is H, CH3, OCH3 or Cl;
X2 and Y2 are independently CH3 or OCH3; and
Q is O or CH2;
provided that
(1) when Z is other than N or CH, then X is H, CH3 or OCH3 and Y is CH3 or OCH3, and
(2) when Z is N and X is Cl, then Y is CH3) or a salt thereof.
<??>These sulfonamides have been found to possess interesting herbidical properties and agricultural compositions containing them may find use in general and selective pre-emergence and post-emergence methods of herbicidal treatment.
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