N-sultamsulfonamides
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United States of America Patent
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Apr 7, 1992
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app pub date -
Aug 23, 1991
filing date -
Oct 31, 1987
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Abstract
Heterocyclically substituted N-sultamsulfonamides, processes for their preparation and their use as herbicides and plant growth regulators. Compounds of the formula I or their salts ##STR1## wherein R.sup.1 and R.sup.2 denote H, halogen, alkyl, alkenyl, alkynyl or alkoxy, which can be substituted, or denote --(CH.sub.2).sub.n --COOR.sup.11 ; R.sup.3 denotes H, alkyl, alkenyl or alkynyl; R.sup.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.gtoreq.2, possess excellent herbicidal and plant growth-regulating properties.
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