Herbicidal heterocyclyl-spirobicyclic catechols

Claims

1. A compound having the formula ##STR13## where Q is ##STR14## A and B are independently selected from oxygen or sulfur; u isO or 1;

nis1to6;

Y is hydrogen, halogen, cyano, alkyl, or haloalkyl;

Z is hydrogen or halogen;

R is hydrogen, amino, straight or branched chain alkyl, haloalkyl, cyanoalkyl, alkoxyalkyl, arylalkyl, alkoxycarbonylalkyl, alkenyl, alkynyl, or a salt-forming ion; and

2. A compound of claim 1 where Q is 1-substituted-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedion-3-yl.

3. A compound of claim 1 where Q is 3,4,5,6-tetrahydrophthalimid-1-yl.

6. A compound of claim 1 where A and B are oxygen; Y and Z are halogen; n is 1 when u is 1 or n is 2 when u is 0; and X is oxygen.

7. A compound of claim 6 where Y is chlorine and Z is fluorine.

8. A compound of claim 7 where Q is 1-substituted-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedion-3-yl or 3,4,5,6-tetrahydrophthalimid-1 -yl; and R is methyl or amino.

9. A compound of claim 8 where Q is 1-substituted-6-trifluoromethyl-2,4(1H,3H)-pyrimidinedion-3-yl.

10. A compound of claim 9 where X is oxygen and R is methyl.

11. An herbicidal composition comprising an herbicidally effective amount of a compound of claim 1, and an herbicidally compatible carrier therefor.

12. An herbicidal composition comprising an herbicidally effective amount of a compound of claim 1 and an herbicidally effective amount of one or more herbicides selected from the group consisting of glyphosate, 2,4-D, MCPA, MCPP, isoproturon, imazapyr, imazamethabenz, imazethapyr, imazaquin, acifluorfen, bifenox, fomasafen, ioxynil, bromoxynil, chlorimuron, chlorsulfuron, bensulfuron, pyrazosulfuron, thifensulfuron, triasulfuron, fenoxaprop, fluazifop, quizalofop, diclofop, bentazone, butachlor, dicamba, fluroxypyr, molinate, EPTC, trifluralin, pendimethalin, metribuzin, atrazine, paraquat, sethoxydim, clethodim, clomazone, glufosinate, diflufenican, and isoxaflutole.

13. An composition of claim 12, and an herbicidally compatible carrier therefor.

14. A method of controlling undesired plant growth, comprising application to the locus where the undesired plants are growing or are expected to grow, an herbicidally effective amount of a composition of claim 11.

15. A method of controlling undesired plant growth, comprising application to the locus where the undesired plants are growing or are expected to grow, an herbicidally effective amount of a composition of claim 13.