Plant protecting and regulating compositions – Plant growth regulating compositions – Organic active compound containing
Patent
1992-07-22
1994-10-18
Ford, John M.
Plant protecting and regulating compositions
Plant growth regulating compositions
Organic active compound containing
544105, 544 47, 544 48, 544295, 544101, 544 32, 544 2, 544 10, 544 9, 544320, 544321, 544324, 544323, 544331, 544332, A01N 4354, C07D40312, C07D41712, C07D41312
Patent
active
053568621
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to certain herbicidal sulfonylureas, agriculturally suitable compositions thereof and a method for their use as general or selective preemergent or postemergent herbicides or as plant growth regulants.
New compounds effective for controlling the growth of undesired vegetation are in constant demand. In the most common situation, such compounds are sought to selectively control the growth of weeds in useful crops such as cotton, rice, corn, wheat and soybeans, to name a few. Unchecked weed growth in such crops can cause significant losses, reducing profit to the farmer and increasing costs to the consumer. In other situations, herbicides are desired which will control all plant growth. Examples of areas in which complete control of all vegetation is desired are areas around railroad tracks, storage tanks and industrial storage areas. There are many products commercially available for these purposes, but the search continues for products which are more effective, less costly and environmentally safe.
EP-A-238,070 discloses herbicidal sulfonylureas of the general formula ##STR1## wherein: Q is a condensed heterocyclic group having an N atom in the bridgehead, which may be substituted.
SUMMARY OF THE INVENTION
Now new compounds have been found that are preemergence and/or postemergence herbicides or plant growth regulants. Accordingly, the compounds of the invention are compounds of the formula ##STR2## wherein: L is ##STR3## Q is O, S or NR.sup.8 ; Q.sup.1 is O or NR.sup.8 ; (C.sub.1 -C.sub.2 alkyl)carbonyloxy or C.sub.1 -C.sub.2 alkylsulfonyloxy; NR.sup.10 R.sup.11 or S(O).sub.2 R.sup.12 ; propargyl or C.sub.2 -C.sub.4 alkoxyalkyl; ##STR4## X is H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkylthio, halogen, C.sub.2 -C.sub.5 alkoxyalkyl, C.sub.2 -C.sub.5 alkoxyalkoxy, amino, C.sub.1 -C.sub.3 alkylamino or di(C.sub.1 -C.sub.3 alkyl)amino; haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.2 -C.sub.5 alkoxyalkyl, C.sub.2 -C.sub.5 alkoxyalkoxy, amino, C.sub.1 -C.sub.3 alkylamino, di(C.sub.1 -C.sub.3 alkyl)amino, C.sub.3 -C.sub.4 alkenyloxy, C.sub.3 -C.sub.4 alkynyloxy, C.sub.2 -C.sub.5 alkylthioalkyl, C.sub.2 -C.sub.5 alkylsulfinylalkyl, C.sub.2 -C.sub.5 alkylsulfonylalkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.2 -C.sub.4 alkynyl, C.sub.3 -C.sub.5 cycloalkyl, azido, cyano, ##STR5## or N(OCH.sub.3)CH.sub.3 ; p is 2 or 3; CH.sub.3 or CH.sub.2 CH.sub.3 ; Cl; and NH.sub.2, NHCH.sub.3, N(CH.sub.3).sub.2, OCF.sub.2 H, OCF.sub.2 Br or N(OCH.sub.3)CH.sub.3 ;
In the above definitions, the term "alkyl", used either alone or in compound words such as "alkylthio" or "haloalkyl", denotes straight chain or branched alkyl, e.g. methyl, ethyl, n-propyl, isopropyl or the different butyl isomers.
Alkoxy denotes methoxy, ethoxy, n-propyloxy, isopropyloxy and the different butyloxy isomers.
Alkenyl denotes straight chain or branched alkenes, e.g. 1-propenyl, 2-propenyl, 3-propenyl and the different butenyl isomers.
Alkynyl denotes straight chain or branched alkynes, e.g. ethynyl, 1-propynyl, 2-propynyl and the different butynyl isomers.
Alkylsulfonyl denotes methylsulfonyl, ethylsulfonyl and the different propylsulfonyl isomers.
Alkylthio, alkylsulfinyl, alkylamino, etc. are defined analogously to the above examples.
Cycloalkyl denotes cyclopropyl, cyclobutyl and cyclopentyl.
The term "halogen", either alone or in compound words such as "haloalkyl", denotes fluorine, chlorine, bromine or iodine. Further, when used in compound words such as "haloalkyl" said alkyl may be partially halogenated or fully substituted with halogen atoms and said halogen atoms may be the same or different. Examples of haloalkyl include CH.sub.2 CH.sub.2 F, CF.sub.2 CF.sub.3 and CH.sub.2 CHFCl.
The total number of carbon atoms in a substituent group is indicated by the C.sub.i -C.sub.j prefix where i and j are numbers from 1 to 5. For example, C.sub.1 -C.sub.3 alkylsu
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E. I. Du Pont de Nemours and Company
Ford John M.
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