Herbicidal sulfonamides.

摘要

Sulfonamide derivatives of the formula wherein J is a specified carbocyclic or heterocyclic group substituted by a 5 or 6-membered heterocycle; W is O or S; R is H or CH3; A is a heterocyclic residue, e.g. pyrimidinyl or triazinyl; and their agriculturally suitable salts, exhibit potent herbicidal activity. Some also show a plant growth regulant effect. The novel compounds may be made by a variety of synthetic routes, e.g. by reacting a suitable sulfonylisocyanate or sulfonylisothiocyanate JSO2NCW with an appropriate heterocyclic amine A-NHR.