Labile esters of agrochemicals for controlled release and reduction of off-site movement
AssigneeMonsanto Technology LLC
InventorDavid A. Morgenstern
Life of this patent
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Abstract
The present invention relates to esters of carboxylic acid agrochemicals comprising a labile protecting group and having formula (I). Certain of the esters of carboxylic acid agrochemicals do not undergo hydrolysis to a significant degree in the dark, but are cleaved to regenerate the parent carboxylic acid agrochemical when exposed to light. Others of the esters of carboxylic acid agrochemicals undergo hydrolysis under both light and dark conditions. The present invention further relates to methods for the controlled release of a carboxylic acid agrochemicals, and to methods of controlling unwanted plants comprising applying to the unwanted plants an ester of a carboxylic acid agrochemical.
Claims26
An ester of a carboxylic acid agrochemical comprising a labile protecting group and having the formula (XIV):
- wherein A represents the remainder of the carboxylic acid agrochemical bonded to the carboxylic acid moiety;
- R is alkyl, aryl, or alkoxy;
- at least one of R1, R2, R3, R4, and R5 is an electron-withdrawing group;
- and the others of R1, R2, R3, R4, and R5 are independently H, alkyl, alkoxy, dialkylamino or halogen;
- and
- wherein the carboxylic acid agrochemical is:
- an herbicide selected from the group consisting of dicamba and 2,4-dichlorophenoxyacetic acid (2,4-D);
- a fungicide selected from the group consisting of benalaxyl and picoxystrobin;
- a plant health agent selected from the group consisting of salicylic acid and 3,6-dichlorosalicylic acid;
- or
- a plant growth regulator selected from the group consisting of cloprop and 4-chlorophenoxyacetic acid (4-CPA).
Dependencies are inferred from the claim text.