Herbicidal 2-aryl-1,2,4-triazine-3,5(2H,4H)-diones and sulfur analogs thereof

A compound of the formula ##STR63## wherein W.sup.1 and W.sup.2 are independently oxygen or sulfur;

• R.sup.2 is hydrogen, hydroxycarbonyl, or methyl;
• X.sup.1 is fluorine;
• X.sup.2 is chlorine or bromine;
• Z is cyano, nitro, amino, alkoxycarbonylamino of 1 to 6 alkyl carbon atoms, di(alkylcarbonyl)amino in which each alkyl is of 1 to 6 carbon atoms, hydroxysulfonyl, halosulfonyl, alkyl of 1 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, --QR, --CO--R.sup.6, --S(O).sub.m R.sup.8, --Q.sup.2 R.sup.9, --OSO.sub.2 R.sup.10, NHN.dbd.CR.sup.11 R.sup.12, or --Q--CR.sup.3 R.sup.4 --CO--Q.sub.1 --R.sup.5 ;
• Q and Q.sup.1 are independently O, S, or NR.sup.7 in which R.sup.7 is hydrogen or alkyl of 1 to 6 carbon atoms;
• Q.sup.2 is O or S;
• R is hydrogen, alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), cycloalkyl of 3 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 6 carbon atoms), benzyl, alkoxyalkyl of 2 to 8 carbon atoms, alkoxyalkoxyalkyl of 3 to 8 carbon atoms, alkylthioalkyl, alkylsulfinylalkyl, or alkylsulfonylalkyl of 2 to 8 carbon atoms, tri(alkyl of 1 to 4 carbon atoms)silyl(alkyl of 1 to 4 carbon atoms), cyanoalkyl of 1 to 5 alkyl carbon atoms, alkenyl or haloalkenyl of 2 to 5 carbon atoms, alkynyl or haloalkynyl of 2 to 5 carbon atoms, haloalkyl of 1 to 5 carbon atoms, alkylcarbonyl of 1 to 6 alkyl carbon atoms, or dialkylaminocarbonyl or dialkylaminothiocarbonyl in which each alkyl is of 1 to 6 carbon atoms;
• R.sup.3 is hydrogen or alkyl of 1 to 4 carbon atoms, and R.sup.4 is hydrogen, alkyl of 1 to 4 carbon atoms, or alkoxy of 1 to 4 carbon atoms;
• R.sup.5 is hydrogen, alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), cycloalkyl of 3 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms), alkoxyalkyl or alkylthioalkyl of 2 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, alkenyl of 2 to 5 carbon atoms, cycloalkenyl of 5 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms), cycloalkenylalkyl of 6 to 10 carbon atoms, phenyl or phenylmethyl (each of which is unsubstituted or ring-substituted with fluorine, chlorine, bromine, or alkyl, alkoxy or alkylthio of 1 to 4 carbon atoms), cyanoalkyl of 1 to 5 alkyl carbon atoms, alkynyl of 2 to 5 carbon atoms, alkylimino of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), or cycloalkylimino of 5 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms);
• R.sup.6 is hydroxy, alkoxy or alkylthio of 1 to 6 carbon atoms, alkoxyalkoxy of 2 to 6 carbon atoms, amino, or alkylamino or dialkylamino herein each alkyl is of 1 to 6 carbon atoms and is unsubstituted or substituted with alkoxy of 1 to 4 carbon atoms;
• R.sup.8 is alkyl of 1 to 6 carbon atoms or alkenyl or alkynyl of 2 to 5 carbon atoms, and m is 1 or 2;
• R.sup.9 is 1-methyl-3-pyrrolidinyl, furfuryl, 2-thienylmethyl, 3-tetrahydrofuranyl, tetrahydrofurfuryl, tetrahydropyran-2-yl-methyl, 1,3-dioxolan-2-ylmethyl, 2-(1,3-dioxolan-2-yl)ethyl, 2,2-dimethyl-1,3-dioxolan-4-ylmethyl, 3-(2-methyl-1,3-dioxolan-2-yl)propyl, 1,3-dioxan-4-ylmethyl, 1,4-benzodioxan-2-ylmethyl, tetrahydro-4Hpyran-4-yl, 5,6-dihydro-2H,pyran-3-ylmethyl, 2,2-dimethyl-1,3-dithiolan-4-ylmethyl, tetrahydro-4H-thiopyran-4-yl, tetrahydrothien-3-yl, 1-oxotetrahydrothien-3-yl, 1,1-dioxotetrahydrothien-3-yl, 2,2-dimethyl-1,1,3,3-tetraoxo-1,3-dithiolan-4-ylmethyl, 1,1-dioxotetrahydro-4H-thiopyran-4-yl, or 1,3-oxothiolan-2-ylmethyl;
• R.sup.10 is alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with halogen, cyano, alkoxy or alkylthio of 1 to 4 carbon atoms, or alkylamino or dialkylamino in which alkyl is of 1 to 4 carbon atoms), phenyl, or alkylamino or dialkylamino in which alkyl is of 1 to 4 carbon atoms;
• and
• R.sup.11 is hydrogen or alkyl of 1 to 4 carbon atoms and R.sup.12 is alkyl of 1 to 4 carbon atoms, or C(R.sup.11)(R.sup.12) taken as a unit is cycloalkyl of 3 to 7 carbon atoms.

A compound of the formula ##STR64## wherein W.sup.1 and W.sup.2 are independently oxygen or sulfur;

• R.sup.1 is alkyl of 1 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, cyanoalkyl of 1 to 5 alkyl carbon atoms, alkenyl or alkynyl of 2 to 5 carbon atoms or alkoxyalkyl, alkylthioalkyl, alkylsulfinylalkyl, or alkylsulfonylalkyl of 2 to 5 carbon atoms;
• R.sup.2 is hydrogen or alkyl of 1 to 4 carbon atoms;
• X.sup.1 is fluorine or chlorine;
• X.sup.2 is chlorine or bromine;
• and Z is --OH, --SH, or NH.sub.2.

A compound of the formula ##STR65## wherein W.sup.1 and W.sup.2 are independently oxygen or sulfur;

• R.sup.1 is alkyl of 1 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, cyanoalkyl of 1 to 5 alkyl carbon atoms, alkenyl or alkynyl of 2 to 5 carbon atoms, or alkoxyalkyl, alkylthioalkyl, alkylsulfinylalkyl, or alkylsulfonylalkyl of 2 to 5 carbon atoms,
• X.sup.1 is fluorine;
• X.sup.2 is chlorine or bromine;
• Z is fluorine, chlorine, bromine, iodine, cyano, nitro, amino, alkoxycarbonylamino of 1 to 6 alkyl carbon atoms, di(alkylcarbonyl)amino in which each alkyl is of 1 to 6 carbon atoms, hydroxysulfonyl, halosulfonyl, alkyl of 1 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, --QR, --CO--R.sup.6, --S(O).sub.m R.sup.8, --Q.sup.2 R.sup.9, --OSO.sub.2 R.sup.10, --NHN.dbd.CR.sup.11 R.sup.12, or --Q--CR.sup.3 R.sup.4 --CO--Q.sup.1 --R.sup.5 ;
• Q and Q.sup.1 are independently O, S, or NR.sup.7 in which R.sup.7 is hydrogen or alkyl of 1 to 6 carbon atoms;
• Q.sup.2 is O or S;
• R is hydrogen, alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), cycloalkyl of 3 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 6 carbon atoms), benzyl, alkoxyalkyl of 2 to 8 carbon atoms, alkoxyalkoxyalkyl of 3 to 8 carbon atoms, alkylthioalkyl, alkylsulfinylalkyl, or alkylsulfonylalkyl of 2 to 8 carbon atoms, tri(alkyl of 1 to 4 carbon atoms)silyl(alkyl of 1 to 4 carbon atoms), cyanoalkyl of 1 to 5 alkyl carbon atoms, alkenyl or haloalkenyl of 2 to 5 carbon atoms, alkynyl or haloalkynyl of 2 to 5 carbon atoms, haloalkyl of 1 to 5 carbon atoms, alkylcarbonyl of 1 to 6 alkyl carbon atoms, or dialkylaminocarbonyl or dialkylaminothiocarbonyl in which each alkyl is of 1 to 6 carbon atoms;
• R.sup.3 is hydrogen or alkyl of 1 to 4 carbon atoms, and R.sup.4 is hydrogen, alkyl of 1 to 4 carbon atoms, or alkoxy of 1 to 4 carbon atoms;
• R.sup.5 is hydrogen, alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), cycloalkyl of 3 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms), alkoxyalkyl or alkylthioalkyl of 2 to 6 carbon atoms, haloalkyl of 1 to 5 carbon atoms, alkenyl of 2 to 5 carbon atoms, cycloalkenyl of 5 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms), cycloalkenylalkyl of 6 to 10 carbon atoms, phenyl or phenylmethyl (each of which is unsubstituted or ring-substituted with fluorine, chlorine, bromine, or alkyl, alkoxy or alkylthio of 1 to 4 carbon atoms), cyanoalkyl of 1 to 5 alkyl carbon atoms, alkynyl of 2 to 5 carbon atoms, alkylimino of 1 to 6 carbon atoms (which is unsubstituted or substituted with cycloalkyl of 3 to 7 carbon atoms), or cycloalkylimino of 5 to 7 carbon atoms (which is unsubstituted or substituted with alkyl of 1 to 4 carbon atoms);
• or Q.sup.1 and R.sup.5 together represent a phenylsulfonylamino group in which the phenyl is unsubstituted or substituted with fluorine, chlorine, bromine, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, or alkoxycarbonyl of 1 to 4 alkyl carbon atoms;
• R.sup.6 is hydroxy, alkoxy or alkylthio of 1 to 6 carbon atoms, alkoxyalkoxy of 2 to 6 carbon atoms, amino, or alkylamino or dialkylamino wherein each alkyl is of 1 to 6 carbon atoms and is unsubstituted or substituted with alkoxy of 1 to 4 carbon atoms;
• R.sup.8 is alkyl of 1 to 6 carbon atoms or alkenyl or alkynyl of 2 to 5 carbon atoms, and m is 1 or 2;
• R.sup.9 is a 5- or 6-membered ring heterocyclic group of 1 or 2 same or different heteroatoms selected from O,S, and N or an alkyl radical of 1 to 5 carbon atoms substituted with said heterocyclic group;
• R.sup.10 is alkyl of 1 to 6 carbon atoms (which is unsubstituted or substituted with halogen, cyano, alkoxy or alkylthio of 1 to 4 carbon atoms, or alkylamino or dialkylamino in which alkyl is of 1 to 4 carbon atoms), phenyl, or alkylamino or dialkylamino in which alkyl is of 1 to 4 carbon atoms;
• and
• R.sup.11 is hydrogen or alkyl of 1 to 4 carbon atoms and R.sup.12 is alkyl of 1 to 4 carbon atoms, or C(R.sup.11)(R.sup.12) taken as a unit is cycloalkyl of 3 to 7 carbon atoms.