Herbicidal sulfonamides.

摘要

Sulfonylurea derivatives of the formula: <CHEM> wherein: R is H or CH3; L is selected from various aromatic groups; X is a secondary or tertiary amino group; Y is a fluoroethoxy group; Z is CH or N; and their agricuituraily suitable salts, exhibit 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 by a variety of synthetic routes, e.g. by reacting an appropriate aromatic sulfonyl isocyanate of formula LSO2NCO with an appropriately substituted aminopyrimidine or aminotriazine.