Plant growth regulant compositions
AssigneeHoffmann-La Roche Inc.
InventorWilliam Szkrybalo
Life of this patent
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Abstract
Plant growth regulant compositions containing as the active ingredients copper (II) complexes of 2,3:4,6-di-O-(substituted)-alpha-L-xylo-2-hexulofuranosonic acid and, preferably, copper (II) 2,3:4,6-di-O-isopropylidene-alpha-L-xylo-2-hexulofuranosonate monohydrate and tripyridine copper (II) 2,3:4,6-di-O-isopropylidene-alpha-L-xylo-2-hexulofuranosonate, are described.
Claims20
A plant growth regulating composition comprising inert adjuvant and, as the active ingredient, an effective amount of a compound of the formula ##STR4## wherein, at least one of R.sub.1 and R.sub.2 is a member selected from the group of methyl, ethyl and trifluoromethyl and the other of R.sub.1 and R.sub.2 is a member selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl and trifluoromethyl;
- R.sub.3 and R.sub.4 are members selected from the group consisting of hydrogen, straight and branched chain alkyl of from 1 to 20 carbon atoms, straight or branched chain alkenyl of from 2 to 20 carbon atoms, straight or branched chain alkynyl of from 2 to 20 carbon atoms, phenyl, phenyl having one or more alkyl, alkenyl, alkynyl, alkoxy or halo-lower alkoxy substituents or R.sub.3 and R.sub.4 together are each a saturated ring containing from 3 to 8 carbon atoms;
- L is a ligand or group of ligands which are known to complex with copper and x is a number from 0 to 6, enantiomers and racemic mixtures.
Dependencies are inferred from the claim text.