HERBICIDAL SULFONYLUREAS

摘要

Compounds of the formula

wherein R is a specified carboxylic ester group or is SO2N-(CH3)2 or OSO2CH3,
exhibit potent herbicidal activity. They have particular utility for the selective control of weeds in rape.
The compounds may be made by reacting the appropriate ortho-substituted benzenesulfonyl isocyanate with 2-amino-4-ethoxy-6-methylamino-1,3,5-triazine.