Novel 2-chloroethane-(thiono)-phosphonic acid amido compounds and plant growth inhibiting compositions
AssigneeBayer Aktiengesellschaft
InventorsWolfgang Hofer, Reinhard Schliebs, Robert Schmidt, Ludwig Eue
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Abstract
Certain novel 2-chloroethane-(thiono)-phosphonic acid amido compounds of the formula ##STR1## in which X and Y, which may be the same or different, are oxygen or sulfur, R is hydrogen or alkyl, and R' is alkyl, or, if R is hydrogen or Y is sulfur, R' may additionally be phenyl which may be substituted by hydroxy, (lower) alkyl, halogen or nitro Possess marked plant growth regulant properties, e.g., selective herbicidal activity, growth promoting and growth altering properties.
Claims15
Plant growth inhibiting composition comprising an inert plant growth regulatingly acceptable carrier, and as an active ingredient, an effective amount of a 2-chloroethane-(thiono)-phosphonic acid amido compound of the general formula ##STR28## in which X and Y, which may be the same or different, are oxygen or sulfur,
- R is hydrogen or iso-propyl, and
- R' is alkyl of form 1 to 4 carbon atoms, or, if R is hydrogen and Y is sulfur,
- R' may additionally be phenyl which may be substituted by up to two chlorine atoms.
Method of inhibiting plant growth which comprises applying to a plant or its habitat a composition comprising an inert acceptable carrier, and as an active ingredient, an inhibitingly effective amount of a 2-chloroethane-(thiono)-phosphonic acid amido compound of the general formula ##STR29## in which X and Y, which may be the same or different, are oxygen or sulfur,
- R is hydrogen or iso-propyl, and
- R' is alkyl of from 1 to 4 carbon atoms, or, if R is hydrogen and R is sulfur,
- R' may additionally be phenyl which may be substituted by up to two chlorine atoms.
Dependencies are inferred from the claim text.