| abstract |
Heterocyclically substituted N-sultamsulfonamides, processes for their preparation and their use as herbicides and plant growth regulators. n Compounds of the formula I or their salts ##STR1## wherein R 1 and R 2 denote H, halogen, alkyl, alkenyl, alkynyl or alkoxy, which can be substituted, or denote --(CH 2 ) n --COOR 11 ; n R 3 denotes H, alkyl, alkenyl or alkynyl; n R 4 denotes a heterocyclic radical of the formulae ##STR2## where E is CH or N; X is O or S and a, b, c, d, e in each case denote 0, 1 or 2, with the proviso that c+d+e≧2, possess excellent herbicidal and plant growth-regulating properties. |