Abstract: This invention relates to herbicidal N-(heterocyclylcarbonyl)sulfonamide compounds, compositions comprising N-(heterocyclylcarbonyl)sulfonamide herbicides and an agronomically acceptable carrier, and the use thereof as broad spectrum herbicides which are effective against both monocot and dicot weed species in both preemergence and postemergence applications. This invention also teaches methods of preparing these compounds as well as methods of using the compounds as herbicides.

Abstract: This invention describes a new and convenient single step process for preparing 2-aryl-3-substituted-4(3H)-pyrimidinone herbicides by reacting a N-substituted amidine (or its hydrohalide salt) with a .beta.-keto ester under conditions of high pressure. The 2-aryl-3-substituted pyrimidinone compounds produced by the process of the present invention are very useful as herbicidal agents for the control of weeds in agronomically important crops.

Abstract: This invention relates to a process for the preparation of pyrimidinone compounds of the formula ##STR1## wherein Ar is an optionally substituted aryl or heteroaromatic moiety,R.sup.3 is an optionally substituted alkyl, alkenyl or alkynyl,R.sup.5 is a hydrogen atom, halo, cyano or an optionally substituted alkyl, alkenyl, alkynyl, alkoxy or alkylthio, andR.sup.6 is a hydrogen atom, cyano, or an optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aryl, aralkyl or heteroaryl. The process comprises reaction of an amidine and a malonic acid derivative to give a hydroxypyrimidinone followed by conversion of the resulting hydroxypyrimidinone to a sulfonyloxypyrimidinone followed by reaction of the resulting sulfonyloxypyrimidinone with an organometallic reagent to give the desired pyrimidinone. The hydroxypyrimidinones, wherein R.sup.6 is hydroxy and sulfonyloxypyrimidinones wherein R.sup.

Abstract: This invention relates to a process for the preparation of pyrimidinone compounds of the formula ##STR1## wherein Ar is an optionally substituted aryl or heteroaromatic moiety,R.sup.3 is an optionally substituted alkyl, alkenyl or alkynyl,R.sup.5 is a hydrogen atom, halo, cyano or an optionally substituted alkyl, alkenyl, alkynyl, alkoxy or alkylthio, andR.sup.6 is a hydrogen atom, cyano, or an optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aryl, aralkyl or heteroaryl.The process comprises reaction of an amidine and a malonic acid derivative to give a hydroxypyrimidinone followed by conversion of the resulting hydroxypyrimidinone to a sulfonyloxypyrimidinone followed by reaction of the resulting sulfonyloxypyrimidinone with an organometallic reagent to give the desired pyrimidinone. The hydroxypyrimidinones, wherein R.sup.6 is hydroxy and sulfonyloxypyrimidinones wherein R.sup.

Abstract: This invention relates to a process for the preparation of pyrimidinone compounds of the formula ##STR1## wherein Ar is an optionally substituted aryl or heteroaromatic moiety,R.sup.3 is an optionally substituted alkyl, alkenyl or alkynyl,R.sup.5 is a hydrogen atom, halo, cyano or an optionally substituted alkyl, alkenyl, alkynyl, alkoxy or alkylthio, andR.sup.6 is a hydrogen atom, cyano, or an optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aryl, aralkyl or heteroaryl.The process comprises reaction of an amidine and a malonic acid derivative to give a hydroxypyrimidinone followed by conversion of the resulting hydroxypyrimidinone to a sulfonyloxypyrimidinone followed by reaction of the resulting sulfonyloxypyrimidinone with an organometallic reagent to give the desired pyrimidinone. The hydroxypyrimidinones, wherein R.sup.6 is hydroxy and sulfonyloxypyrimidinones wherein R.sup.

Abstract: The present invention relates to compositions, having herbicidal synergistic effects, comprising(i) propanil;(ii) a compound selected from asulam, butamifos and methazole; and(iii) an agronomically acceptable carrierfor the control of various grasses and broadleaf weeds in rice. More particularly, such compositions exhibit synergistic properties for selectively controlling weeds in rice, especially grassy weeds such is Barnyardgrass, Junglerice, Signalgrass and Sprangletop. This invention also relates to a method of controlling weed species in rice comprising applying a herbicidally effective amount of composition comprising (i) propanil, (ii) a compound selected from asulam, butamifos and methazole and (iii) an agronomically acceptable carrier to the weed, to the locus of the weed or to the growth medium of said weed.

Abstract: Disclosed are herbicidal aryl substituted cycloalkyl and aryl substituted cycloalkenyl compounds, herbicidal compositions, and herbicidal use of the compounds and compositions. The aryl substituent is selected from substituted phenyl, unsubstituted or substituted five-membered heterocycle, and unsubstituted or substituted six-membered heterocycle.

Abstract: Disclosed are herbicidal halopyridyl triazolinones, herbicidal compositions comprising the halopyridyl triazolinones, and herbicidal use of the compounds and compositions. Such compounds and compositions are useful as both preemergence and postemergence herbicides in a variety of crops.

Abstract: A class of 2-arylpyrimidines which is useful in the control of weeds of the general formula: ##STR1## wherein R.sup.2 is an optionally substituted aromatic ring; R.sup.3 is a saturated or unsaturated alkyl group; R.sup.5 is selected from acyl, alkoxyalkyl, alkoxyimino, dialkoxyalkyl, formyl, hydroxyalkyl, alkoxyalkoxy, cyanoalkyl and hydroxyimino; R.sup.6 is selected from hydrogen, halo, alkyl, haloalkyl, aryl, and alkoxy; and X is oxygen or sulfur.

Abstract: A class of 5-aryl-isoxazolinones and compositions thereof which are useful in the control of weeds is of the general formula ##STR1## wherein Ar is a substituted or unsubstituted aryl or heteroaryl;R.sup.2 is alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl or alkoxyalkyl, all of which may be substituted with one or more halogen atoms;R.sup.4 is alkynyl or alkoxyalkyl, both of which may be substituted with one or more halogen atoms; andX is an oxygen or a sulfur atom.