| 摘要 |
Compounds of the general formula
<CHEM>
wherein
A is
<CHEM>
B is Cl or Br:
R is carboxylic ester, amide, Cl, CF3, NO2 or various sulfur containing groups;
R<1> is H, halogen, NO2, CH3, OCH3 or CF3,
X and Z are independently H, CH3, Br, Cl, OCH3, CH2CH3, CH2OCH3 or OCH2CH3; and
Y is halogen, CN, NO or various organic groups; and their agriculturally suitable salts; exhibit potent herbicidal activity. Some can also be used to regulate plant growth. The compounds can be made by reacting the appropriately substituted benzenesulfonyl or pyridinesulfonyl isocyanate with the appropriate 2-aminopyrimidine they can be formulated for agricultural use in conventional manner.
<??>Compounds wherein R is carboxyl are of interest as intermediates for the preparation of the compounds (I).
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