| 摘要 |
Sulfonamide derivatives of the formula
<CHEM>
wherein
Q is an optionaily substituted benzothiazole, benzisothiazole, benzoxazole or benzisoxazole group;
W1 is O or S,
R7 is H or CH3; and
A is a mono- or bicyclic heterocyclic group, e.g. pyrimidinyl or triazinyl,
and their agriculturally suitable salts, exhiblt herbicidal activity. Some also show a plant growth regulant effect.
<??>The compounds may be formulated for agricultural use in conventional manner. They may be made e.g. by reacting an appropriate sulfonyl isocyanate or isothiocyanate QSO2NCW1 with an appropriate heterocylic amine HNR7A.
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