| abstract |
Compounds of the formulan whereinn R 1 is halogen, CF 3 , alkoxy, alkyl, NO 2 , carboxylic or sulfonate ester, sulfonamide or CH 2 L; L is sulfonamide, alkoxy or ester; R 2 is H, halogen, CE 3 or OCH 3 ; R a is H or CH 3 ; R 9 is H or alkyl: R 3 isn n n W is 0 or S; Z is CH or N; X, Y, X 1 , X 2 , X 3 , Y, are selected from various organic, halo or amino substituents, or X, may be H; and their agriculturally suitable salts, exhibit herbicidal and plant growth regulant activity. The compounds may be formulated for use in conventional manner. n The compounds may be made by reacting a novel sulfonyl isocyanate of formulan with an appropriate aminoheterocycle R 3 NHR 8 , R 1 , R 2 , R 3 , R s and R 9 being as defined above. n Alternatively the appropriately substituted phenylmethane sulfonamide may be reacted with an isothiocyanate R 3 NCS. |