Herbicidal pyrimidone derivatives

1. A compound selected from Formula 1, N-oxides and salts thereof,

wherein

X is CH;

Y is C(O);

A is a radical selected from the group consisting of

B 1 and B 3 are each independently a radical selected from the group consisting of

B 2 is a radical selected from the group consisting of

R 1 is phenyl, phenylsulfonyl, —W 1 (phenyl), —W 1 (S-phenyl), —W 1 (SO 2 -phenyl), —W 2 (SO 2 CH 2 -phenyl) or —W 2 (SCH 2 -phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G or —W 2 G; or cyano, hydroxy, amino, —C(═O)OH, —C(═O)NHCN, —C(═O)NHOH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —NHCHO, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 2 -C 10 alkynyl, C 1 -C 10 haloalkyl, C 2 -C 10 haloalkenyl, C 2 -C 12 haloalkynyl, C 3 -C 12 cycloalkyl, C 3 -C 12 halocycloalkyl, C 4 -C 14 alkylcycloalkyl, C 4 -C 14 cycloalkylalkyl, C 6 -C 18 cycloalkylcycloalkyl, C 4 -C 14 halocycloalkylalkyl, C 5 -C 16 alkylcycloalkylalkyl, C 3 -C 12 cycloalkenyl, C 3 -C 12 halocycloalkenyl, C 2 -C 12 alkoxyalkyl, C 3 -C 12 alkoxyalkenyl, C 4 -C 14 alkylcycloalkyl, C 4 -C 14 alkoxycycloalkyl, C 4 -C 14 cycloalkoxyalkyl, C 5 -C 14 cycloalkoxyalkoxyalkyl, C 3 -C 14 alkoxyalkoxyalkyl, C 2 -C 12 alkylthioalkyl, C 2 -C 12 alkylsulfinylalkyl, C 2 -C 12 alkylsulfonylalkyl, C 2 -C 12 alkylaminoalkyl, C 3 -C 14 dialkylaminoalkyl, C 2 -C 12 haloalkylaminoalkyl, C 4 -C 14 cycloalkylaminoalkyl, C 2 -C 12 alkylcarbonyl, C 2 -C 12 haloalkylcarbonyl, C 4 -C 14 cycloalkylcarbonyl, C 2 -C 12 alkoxycarbonyl, C 4 -C 16 cycloalkoxycarbonyl, C 5 -C 14 cycloalkylalkoxycarbonyl, C 2 -C 12 alkylaminocarbonyl, C 3 -C 14 dialkylaminocarbonyl, C 4 -C 14 cycloalkylaminocarbonyl, C 2 -C 9 cyanoalkyl, C 1 -C 10 hydroxyalkyl, C 4 -C 14 cycloalkenylalkyl, C 2 -C 12 haloalkoxyalkyl, C 2 -C 12 alkoxyhaloalkyl, C 2 -C 12 haloalkoxyhaloalkyl, C 4 -C 14 halocycloalkoxyalkyl, C 4 -C 14 cycloalkenyloxyalkyl, C 4 -C 14 halocycloalkenyloxyalkyl, C 3 -C 14 dialkoxyalkyl, C 3 -C 14 alkoxyalkylcarbonyl, C 3 -C 14 alkoxycarbonylalkyl, C 2 -C 12 haloalkoxycarbonyl, C 1 -C 10 alkoxy, C 1 -C 10 haloalkoxy, C 3 -C 12 cycloalkoxy, C 3 -C 12 halocycloalkoxy, C 4 -C 14 cycloalkylalkoxy, C 2 -C 10 alkenyloxy, C 2 -C 10 haloalkenyloxy, C 2 -C 10 alkynyloxy, C 3 -C 10 haloalkynyloxy, C 2 -C 12 alkoxyalkoxy, C 2 -C 12 alkylcarbonyloxy, C 2 -C 12 haloalkylcarbonyloxy, C 4 -C 14 cycloalkylcarbonyloxy, C 3 -C 14 alkylcarbonylalkoxy, C 1 -C 10 alkylthio, C 1 -C 10 haloalkylthio, C 3 -C 12 cycloalkylthio, C 1 -C 10 alkylsulfinyl, C 1 -C 10 haloalkylsulfinyl, C 1 -C 10 alkylsulfonyl, C 1 -C 10 haloalkylsulfonyl, C 3 -C 12 cycloalkylsulfonyl, C 2 -C 12 alkylcarbonylthio, C 2 -C 12 alkyl(thiocarbonyl)thio, C 3 -C 12 cycloalkylsulfinyl, C 1 -C 10 alkylaminosulfonyl, C 2 -C 12 dialkylaminosulfonyl, C 1 -C 10 alkylamino, C 2 -C 12 dialkylamino, C 1 -C 10 haloalkylamino, C 2 -C 12 halodialkylamino, C 3 -C 12 cycloalkylamino, C 2 -C 12 alkylcarbonylamino, C 2 -C 12 haloalkylcarbonylamino, C 1 -C 10 alkylsulfonylamino, C 1 -C 10 haloalkylsulfonylamino or C 4 -C 14 cycloalkyl(alkyl)amino;

W 1 is C 1 -C 6 alkylene, C 2 -C 6 alkenylene or C 2 -C 6 alkynylene;

W 2 is C 1 -C 6 alkylene;

R 2 is phenyl or —W 3 (phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G or —W 4 G; or H, cyano, hydroxy, amino, nitro, —CHO, —C(═O)OH, —C(═O)NH 2 , —C(═S)NH 2 , —C(═O)NHCN, —C(═O)NHOH, —SH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —SF 5 , —NHCHO, —NHNH 2 , —NHOH, —NHCN, —NHC(═O)NH 2 , C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 6 -C 14 cycloalkylcycloalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 3 -C 10 alkoxyalkenyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl, C 2 -C 8 alkylsulfonylalkyl, C 2 -C 8 alkylaminoalkyl, C 3 -C 10 dialkylaminoalkyl, C 2 -C 8 haloalkylaminoalkyl, C 4 -C 10 cycloalkylaminoalkyl, C 2 -C 8 alkylcarbonyl, C 2 -C 8 haloalkylcarbonyl, C 4 -C 10 cycloalkylcarbonyl, C 2 -C 8 alkoxycarbonyl, C 4 -C 10 cycloalkoxycarbonyl, C 5 -C 12 cycloalkylalkoxycarbonyl, C 2 -C 8 alkylaminocarbonyl, C 3 -C 10 dialkylaminocarbonyl, C 4 -C 10 cycloalkylaminocarbonyl, C 2 -C 5 cyanoalkyl, C 1 -C 6 hydroxyalkyl, C 4 -C 10 cycloalkenylalkyl, C 2 -C 8 haloalkoxyalkyl, C 2 -C 8 alkoxyhaloalkyl, C 2 -C 8 haloalkoxyhaloalkyl, C 4 -C 10 halocycloalkoxyalkyl, C 4 -C 10 cycloalkenyloxyalkyl, C 4 -C 10 halocycloalkenyloxyalkyl, C 3 -C 10 dialkoxyalkyl, C 3 -C 10 alkoxyalkylcarbonyl, C 3 -C 10 alkoxycarbonylalkyl, C 2 -C 8 haloalkoxycarbonyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 3 -C 8 halocycloalkoxy, C 4 -C 10 cycloalkylalkoxy, C 2 -C 6 alkenyloxy, C 2 -C 6 haloalkenyloxy, C 2 -C 6 alkynyloxy, C 3 -C 6 haloalkynyloxy, C 2 -C 8 alkoxyalkoxy, C 2 -C 8 alkylcarbonyloxy, C 2 -C 8 haloalkylcarbonyloxy, C 4 -C 10 cycloalkylcarbonyloxy, C 3 -C 10 alkylcarbonylalkoxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, C 3 -C 8 cycloalkylthio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 haloalkylsulfonyl, C 3 -C 8 cycloalkylsulfonyl, C 3 -C 8 trialkylsilyl, C 3 -C 8 cycloalkenyloxy, C 3 -C 8 halocycloalkenyloxy, C 2 -C 8 haloalkoxyalkoxy, C 2 -C 8 alkoxyhaloalkoxy, C 2 -C 8 haloalkoxyhaloalkoxy, C 3 -C 10 alkoxycarbonylalkoxy, C 2 -C 8 alkyl(thiocarbonyl)oxy, C 2 -C 8 alkylcarbonylthio, C 2 -C 8 alkyl(thiocarbonyl)thio, C 3 -C 8 cycloalkylsulfinyl, C 1 -C 6 alkylaminosulfonyl, C 2 -C 8 dialkylaminosulfonyl, C 3 -C 10 halotrialkylsilyl, C 1 -C 6 alkylamino, C 2 -C 8 dialkylamino, C 1 -C 6 haloalkylamino, C 2 -C 8 halodialkylamino, C 3 -C 8 cycloalkylamino, C 2 -C 8 alkylcarbonylamino, C 2 -C 8 haloalkylcarbonylamino, C 1 -C 6 alkylsulfonylamino, C 1 -C 6 haloalkylsulfonylamino or C 4 -C 10 cycloalkyl(alkyl)amino; or

R 1 and R 2 are taken together along with the atoms to which they are attached to make a 5-,6- or 7-membered unsaturated, partially unsaturated or fully unsaturated ring along with members consisting of up to 2 oxygen atoms, 2 nitrogen atoms or 2 sulfur atoms or up to two —S(O)—, —S(O) 2 —, —C(O)—groups optionally substituted on carbon atom ring members selected from halogen, cyano, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 3 -C 8 cycloalkyl and C 2 -C 8 alkoxyalkyl; and phenyl optionally substituted with up to 5 substituents selected from cyano, nitro, halogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy and C 1 -C 6 haloalkoxy; and optionally substituted on nitrogen ring members seleced from H and C 1 -C 6 alkyl; and phenyl optionally substituted with up to 5 substituents selected from cyano, nitro, halogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy and C 1 -C 6 haloalkoxy;

W 3 is C 1 -C 6 alkylene, C 2 -C 6 alkenylene or C 2 -C 6 alkynylene;

W 4 is C 1 -C 6 alkylene;

R 3 is H, halogen, cyano, hydroxy, —O − M + , amino, nitro, —CHO, —C(═O)OH, —C(═O)NH 2 , —C(═S)NH 2 , —SH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —OCN, —SCN, —SF S , —NHNH 2 , —NHOH, —N═C═O, —N═C═S, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 3 -C 8 halocycloalkoxy, C 4 -C 10 cycloalkylalkoxy, C 2 -C 6 alkenyloxy, C 2 -C 6 haloalkenyloxy, C 2 -C 6 alkynyloxy, C 3 -C 6 haloalkynyloxy, C 2 -C 8 alkoxyalkoxy, C 2 -C 8 alkylcarbonyloxy, C 2 -C 8 haloalkylcarbonyloxy, C 4 -C 10 cycloalkylcarbonyloxy, C 3 -C 10 alkylcarbonylalkoxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, C 3 -C 8 cycloalkylthio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 haloalkylsulfonyl, C 3 -C 8 cycloalkylsulfonyl, C 1 -C 6 alkylsulfonyloxy, C 1 -C 6 alkylamino, C 2 -C 8 dialkylamino, C 1 -C 6 haloalkylamino, C 2 -C 8 halodialkylamino, C 3 -C 8 cycloalkylamino, C 2 -C 8 alkylcarbonylamino, C 2 -C 8 haloalkylcarbonylamino, C 1 -C 6 alkylsulfonylamino or C 1 -C 6 haloalkylsulfonylamino; or benzyloxy, phenyloxy, benzylcarbonyloxy, phenylcarbonyloxy, phenylsulfonyloxy, benzylsulfonyloxy, phenylthio, benzylthio, phenylsulfinyl, benzylsulfinyl, phenylsulfonyl or benzylsulfonyl, each optionally substituted on ring members with up to five substituents selected from R 21 ;

M + is an alkali metal cation or an ammonium cation;

R 4 , R 5 , R 6 and R 7 are each independently H, halogen, hydroxy, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy or C 3 -C 8 halocycloalkoxy; or phenyl or benzyl, each optionally substituted on ring members with up to five substituents selected from R 21 ;

R 8 is H, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl or C 3 -C 8 halocycloalkyl; or benzyl optionally substituted on ring members with up to five substituents selected from R 21 ;

R 9 is H, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 6 -C 14 cycloalkylcycloalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl or C 2 -C 8 alkylthioalkyl;

R 10 is H, halogen, cyano, hydroxy, amino, nitro, SH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —OCN, —SCN, —SF 5 , —NHCHO, —NHNH 2 , —N 3 , —NHOH, —NHCN, —NHC(═O)NH 2 , —N═C═O, —N═C═S, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 6 -C 14 cycloalkylcycloalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl or C 2 -C 8 alkylthioalkyl;

R 11 is H, halogen, cyano, hydroxy, amino, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl or C 2 -C 8 alkylsulfonylalkyl; or phenyl optionally substituted with up to five substituents selected from R 21 ;

R 12 is H, halogen, cyano, hydroxy, amino, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 6 -C 14 cycloalkylcycloalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl or C 2 -C 8 alkoxycarbonylamino;

R 13 is H, halogen, cyano, hydroxy, amino, nitro or C 2 -C 8 alkoxycarbonyl;

n is 0, 1, or 2;

each R 14 , R 15 , R 18 and R 19 is independently H, halogen, cyano, hydroxy or C 1 -C 6 alkyl; or

a pair of R 14 and R 18 is taken together as C 2 -C 6 alkylene or C 2 -C 6 alkenylene;

R 20 is H, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl or C 3 -C 8 cycloalkyl;

T is C 1 -C 6 alkylene or C 2 -C 6 alkenylene;

each G is independently a 5- or 6-membered heterocyclic ring or an 8-,9- or 10-membered fused bicyclic ring system, each ring or ring system optionally substituted with up to five substituents selected from R 21 on carbon ring members and R 22 on nitrogen ring members;

each R 21 is independently halogen, cyano, hydroxy, amino, nitro, —CHO, —C(═O)OH, —C(═O)NH 2 , —C(═S)NH 2 , —C(═O)NHCN, —C(═O)NHOH, —SH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —OCN, —SCN, —SF 5 , C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl, C 2 -C 8 alkoxyhaloalkyl, C 2 -C 5 cyanoalkyl, C 1 -C 6 hydroxyalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 3 -C 8 halocycloalkoxy, C 4 -C 10 cycloalkylalkoxy, C 2 -C 6 alkenyloxy, C 2 -C 6 haloalkenyloxy, C 2 -C 8 alkoxyalkoxy, C 2 -C 8 alkylcarbonyloxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, C 3 -C 8 cycloalkylthio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 haloalkylsulfonyl, C 3 -C 8 cycloalkylsulfonyl, C 1 -C 6 alkylamino, C 2 -C 8 dialkylamino, C 1 -C 6 haloalkylamino, C 2 -C 8 halodialkylamino or C 3 -C 8 cycloalkylamino; and

each R 22 is independently C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 3 -C 8 cycloalkyl or C 2 -C 8 alkoxyalkyl.

2. The compound of claim 1 wherein

A is A-1, A-3, A-4, A-5 or A-6;

R 1 is phenyl, phenylsulfonyl, —W 1 (phenyl), —W 1 (S-phenyl), —W 1 (SO 2 -phenyl), —W 2 (SO 2 CH 2 -phenyl) or —W 2 (SCH 2 -phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G or —W 2 G; or cyano, hydroxy, amino, —C(═O)OH, —C(═O)NHCN, —C(═O)NHOH, —SO 2 NH 2 , —SO 2 NHCN, —SO 2 NHOH, —NHCHO, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 2 -C 10 alkynyl, C 1 -C 10 haloalkyl, C 2 -C 10 haloalkenyl, C 2 -C 12 haloalkynyl, C 3 -C 12 cycloalkyl, C 3 -C 12 halocycloalkyl, C 4 -C 14 alkylcycloalkyl, C 4 -C 14 cycloalkylalkyl, C 6 -C 18 cycloalkylcycloalkyl, C 4 -C 14 halocycloalkylalkyl, C 5 -C 16 alkylcycloalkylalkyl, C 3 -C 12 cycloalkenyl, C 3 -C 12 halocycloalkenyl, C 2 -C 12 alkoxyalkyl, C 3 -C 12 alkoxyalkenyl, C 4 -C 14 alkylcycloalkyl, C 4 -C 14 alkoxycycloalkyl, C 4 -C 14 cycloalkoxyalkyl, C 5 -C 14 cycloalkoxyalkoxyalkyl, C 3 -C 14 alkoxyalkoxyalkyl, C 2 -C 12 alkylthioalkyl, C 2 -C 12 alkylsulfinylalkyl, C 2 -C 12 alkylsulfonylalkyl, C 2 -C 12 alkylaminoalkyl, C 3 -C 14 dialkylaminoalkyl, C 2 -C 12 haloalkylaminoalkyl, C 4 -C 14 cycloalkylaminoalkyl, C 2 -C 12 alkylcarbonyl, C 2 -C 12 haloalkylcarbonyl, C 4 -C 14 cycloalkylcarbonyl, C 2 -C 12 alkoxycarbonyl, C 4 -C 16 cycloalkoxycarbonyl, C 5 -C 14 cycloalkylalkoxycarbonyl, C 2 -C 12 alkylaminocarbonyl, C 3 -C 14 dialkylaminocarbonyl, C 4 -C 14 cycloalkylaminocarbonyl, C 2 -C 9 cyanoalkyl, C 1 -C 10 hydroxyalkyl, C 4 -C 14 cycloalkenylalkyl, C 2 -C 12 haloalkoxyalkyl, C 2 -C 12 alkoxyhaloalkyl, C 2 -C 12 haloalkoxyhaloalkyl, C 4 -C 14 halocycloalkoxyalkyl, C 4 -C 14 cycloalkenyloxyalkyl, C 4 -C 14 halocycloalkenyloxyalkyl, C 3 -C 14 dialkoxyalkyl, C 3 -C 14 alkoxyalkylcarbonyl, C 3 -C 14 alkoxycarbonylalkyl or C 2 -C 12 haloalkoxycarbonyl;

W 1 is C 1 -C 6 alkylene;

W 2 is —CH 2 —;

R 2 is phenyl or —W 3 (phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G; C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 6 -C 14 cycloalkylcycloalkyl, C 4 -C 10 halocycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 3 -C 10 alkoxyalkenyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl, C 2 -C 8 alkylsulfonylalkyl, C 2 -C 8 alkylcarbonyl, C 4 -C 10 cycloalkenylalkyl, C 2 -C 8 haloalkoxyalkyl, C 2 -C 8 alkoxyhaloalkyl, C 2 -C 8 haloalkoxyhaloalkyl, C 4 -C 10 halocycloalkoxyalkyl, C 4 -C 10 cycloalkenyloxyalkyl, C 4 -C 10 halocycloalkenyloxyalkyl, C 3 -C 10 dialkoxyalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 3 -C 8 halocycloalkoxy, C 4 -C 10 cycloalkylalkoxy, C 2 -C 6 alkenyloxy, C 2 -C 6 haloalkenyloxy, C 2 -C 6 alkynyloxy, C 3 -C 6 haloalkynyloxy, C 2 -C 8 alkoxyalkoxy, C 2 -C 8 alkylcarbonyloxy, C 2 -C 8 haloalkylcarbonyloxy, C 4 -C 10 cycloalkylcarbonyloxy, C 3 -C 10 alkylcarbonylalkoxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, C 3 -C 8 cycloalkylthio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 haloalkylsulfonyl, C 3 -C 8 cycloalkylsulfonyl, C 3 -C 8 trialkylsilyl, C 3 -C 8 cycloalkenyloxy, C 3 -C 8 halocycloalkenyloxy, C 2 -C 8 haloalkoxyalkoxy, C 2 -C 8 alkoxyhaloalkoxy, C 2 -C 8 haloalkoxyhaloalkoxy, C 3 -C 10 alkoxycarbonylalkoxy, C 2 -C 8 alkyl(thiocarbonyl)oxy, C 3 -C 8 cycloalkylsulfinyl or C 3 -C 10 halotrialkylsilyl;

W 3 is —CH 2 —;

W 4 is —CH 2 —;

or R 1 and R 2 are taken together along with the atoms to which they are attached to make a 6- or 7-membered unsaturated, partially unsaturated or fully unsaturated ring along with members consisting of up to 1 oxygen atoms, 1 nitrogen atoms or 1 sulfur atoms or up to one —S(O)—, —S(O) 2 —, —C(O)— groups optionally substituted on carbon atom ring members selected from halogen, cyano, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 3 -C 8 cycloalkyl and C 2 -C 8 alkoxyalkyl; and optionally substituted on nitrogen ring members seleced from H and C 1 -C 6 alkyl;

R 3 is hydroxy, —O − M + , C 2 -C 8 alkylcarbonyloxy, C 2 -C 8 haloalkylcarbonyloxy, C 4 -C 10 cycloalkylcarbonyloxy or C 3 -C 10 alkylcarbonylalkoxy; or benzyloxy, phenyloxy, benzylcarbonyloxy, phenylcarbonyloxy, phenylsulfonyloxy or benzylsulfonyloxy, each optionally substituted on ring members with up to two substituents selected from R 21 ;

M + is a sodium or potassium metal cation;

R 9 is C 1 -C 6 alkyl;

R 10 is H, halogen or C 1 -C 6 alkyl;

R 11 is H or C 1 -C 6 alkyl;

R 12 is H, halogen, cyano, hydroxy, amino or C 1 -C 6 alkyl;

R 13 is cyano or nitro;

each R 14 , R 15 R 18 and R 19 is H or CH 3 ; or

R 14 and R 18 are taken together as —CH 2 CH 2 CH 2 — or —CH═CHCH 2 —;

R 20 is H or CH 3 ;

T is —CH 2 CH 2 — or —CH═CH—;

each G is G-1 through G-20

and r is 0, 1, 2 or 3;

each R 21 is independently halogen, cyano, hydroxy, nitro, —CHO, —SH, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 2 -C 6 haloalkynyl, C 3 -C 8 cycloalkyl, C 3 -C 8 halocycloalkyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 cycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 4 -C 10 cycloalkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl, C 2 -C 8 alkoxyhaloalkyl, C 2 -C 5 cyanoalkyl, C 1 -C 6 hydroxyalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 3 -C 8 cycloalkoxy, C 3 -C 8 halocycloalkoxy, C 4 -C 10 cycloalkylalkoxy, C 2 -C 6 alkenyloxy, C 2 -C 6 haloalkenyloxy, C 2 -C 8 alkoxyalkoxy, C 2 -C 8 alkylcarbonyloxy, C 1 -C 6 alkylthio, C 1 -C 6 haloalkylthio, C 3 -C 8 cycloalkylthio, C 1 -C 6 alkylsulfinyl, C 1 -C 6 haloalkylsulfinyl, C 1 -C 6 alkylsulfonyl, C 1 -C 6 haloalkylsulfonyl or C 3 -C 8 cycloalkylsulfonyl; and

each R 22 is independently C 1 -C 6 alkyl or C 1 -C 6 haloalkyl.

3. A compound of claim 2 wherein

A is A-3 or A-5;

B 2 is C-3;

R 1 is phenyl, —W 1 (phenyl), —W 1 (S-phenyl), —W 1 (SO 2 -phenyl), —W 2 (SO 2 CH 2 -phenyl) or —W 2 (SCH 2 -phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G or —W 2 G; or C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 3 -C 8 cycloalkyl, C 4 -C 10 cycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl or C 2 -C 8 alkylsulfonylalkyl;

R 2 is phenyl or —W 3 (phenyl), each optionally substituted on ring members with up to two substituents selected from R 21 ; or C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 3 -C 8 cycloalkyl, C 1 -C 6 alkoxy, C 1 -C 6 alkylthio or C 1 -C 6 alkylsulfonyl;

R 3 is hydroxy or —O − M + ; or phenylsulfonyloxy optionally substituted on ring members with up to two substituents selected from R 21 ;

R 9 is CH 2 CH 3 ;

R 10 is H or CH 3 ;

W 1 is —CH 2 —;

W 3 is —CH 2 —;

G is G-13, G-14, G-15, G-16 or G-17; and

each R 21 is independently halogen, nitro, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy or C 1 -C 6 alkylthio.

4. A compound of claim 2 wherein

A is A-1, A-3 or A-5;

B 1 is C-1;

B 2 is C-3;

B 3 is C-1;

R 1 is phenyl, —W 1 (phenyl), —W 1 (S-phenyl), —W 1 (SO 2 -phenyl), —W 2 (SO 2 CH 2 -phenyl) or —W 2 (SCH 2 -phenyl), each optionally substituted on ring members with up to five substituents selected from R 21 ; or -G or —W 2 G; or C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 2 -C 6 haloalkenyl, C 3 -C 8 cycloalkyl, C 4 -C 10 cycloalkylalkyl, C 5 -C 12 alkylcycloalkylalkyl, C 3 -C 8 cycloalkenyl, C 3 -C 8 halocycloalkenyl, C 2 -C 8 alkoxyalkyl, C 3 -C 10 alkoxyalkenyl, C 4 -C 10 alkylcycloalkyl, C 4 -C 10 alkoxycycloalkyl, C 3 -C 10 alkoxyalkoxyalkyl, C 2 -C 8 alkylthioalkyl, C 2 -C 8 alkylsulfinylalkyl or C 2 -C 8 alkylsulfonylalkyl;

W 1 is —CH 2 —;

R 2 is phenyl or —W 3 (phenyl), each optionally substituted on ring members with up to two substituents selected from R 21 ; or -G or; or C 1 -C 6 alkyl or C 3 -C 8 cycloalkyl;

or R 1 and R 2 are taken together along with the atoms to which they are attached to make a 7-membered partially unsaturated ring

R 3 is hydroxy or C 2 -C 8 alkylcarbonyloxy;

R 9 is CH 2 CH 3 ;

R 10 is H or CH 3 ;

G is G-2, G-3, G-9, G-15, G-18, G-19 or G-20; and

R 21 is independently halogen, nitro, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy or C 1 -C 6 alkylthio.

5. A compound of claim 4 wherein

A is A-1 or A-3;

R 1 is phenyl, 2-fluorophenyl, 3-fluorophenyl, 4-fluorophenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 4-methylphenyl, 4-ethylphenyl, 2-methylphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3,5-dimethylphenyl, 3,4-dimethoxyphenyl, 2,3-dimethylphenyl, 3-fluoro-2-methylphenyl, 4-fluoro-3-methylphenyl or 5-chloro-2-methylphenyl;

R 2 is phenyl, 2-methylphenyl, 3-methylphenyl, 3-bromophenyl, 3-chlorophenyl, 4-chlorophenyl, 3-fluorophenyl or 3,5-difluorophenyl;

R 3 is hydroxy or —OC(═O)CH 2 CH(CH 3 ) 2 ;

each R 14 , R 15 , R 18 and R 19 is H or CH 3 ; and

T is —CH 2 CH 2 —.

6. A compound of claim 5 wherein

A is A-1;

R 1 is phenyl, 4-ethylphenyl, 4-methoxyphenyl, 3,5-dimethylphenyl, 3,4-dimethoxyphenyl, 3-fluoro-2-methylphenyl, 4-fluoro-3-methylphenyl or 5-chloro-2-methylphenyl;

R 2 is phenyl, 3-chlorophenyl, or 2-methylphenyl;

R 3 is hydroxy or —OC(═O)CH 2 CH(CH 3 ) 2 ; and

each R 14 , R 15 , R 18 and R 19 is H.

7. A compound of claim 4 wherein

A is A-3;

R 1 is n-Pr or —CH 2 CH 2 OCH 3 ;

R 2 is phenyl, 2-methylphenyl, 3-methylphenyl, 4-chlorophenyl, 3-fluorophenyl or 3,5-difluorophenyl;

R 3 is hydroxy; and

each R 14 , R 15 , R 18 and R 19 is H.

8. A compound of claim 4 wherein

A is A-1;

R 1 is -G or —W 2 G; C 1 -C 6 alkyl, C 3 -C 8 cycloalkyl, or C 2 -C 8 alkoxyalkyl;

G is G-19 or G-20;

R 2 is phenyl, 2-methylphenyl, 3-methylphenyl, 4-chlorophenyl, 3-fluorophenyl or 3,5-difluorophenyl;

R 3 is hydroxy; and

each R 14 , R 15 , R 18 and R 19 is H.

9. A compound of claim 4 wherein

R 1 is n-Pr, c-hexyl, —CH 2 CH 2 OCH 3 or —CH 2 CH 2 CH 2 OCH 3 ;

R 2 is 3-thienyl or 2-thienyl;

R 3 is hydroxy; and

each R 14 , R 15 , R 18 and R 19 is H.

10. A compound of Formula 1 in claim 1 that is

5-[(2-hydroxy-6-oxo-1-cyclohexen-1-yl)carbonyl]-2,3-diphenyl-4(3H)-pyrimidinone,

5-[(2-hydroxy-6-oxo-1-cyclohexene-1-yl)carbonyl]-3-(3-methoxypropyl)-2-(3-methylphenyl)-4(3H)-pyrimidinone,

5-[(2-hydroxy-6-oxo-cyclohexen-1-yl)carbonyl]-3-(2-methoxyethyl)-2-(3-thienyl)-4(3H)-pyrimidinone,

5-[(2-hydroxy-6-oxo-cyclohexen-1-yl)carbonyl]-3-(4-methoxyphenyl)-2-phenyl-4(3H)-pyrimidinone,

5-[(2-hydroxy-6-oxo-cyclohexen-1-yl)carbonyl]-3-(3-methoxypropyl)-2-phenyl-4(3H)-pyrimidinone or

3-cyclohexyl-5-[(2-hydroxy-6-oxo-cyclohexen-1-yl)carbonyl]-2-phenyl-4(3H)-pyrimidinone.

11. A herbicidal mixture comprising (a) a compound of claim 1 and (b) at least one additional active ingredient selected from the group consisting of (b1) photosystem II inhibitors selected from the group consisting of ametryn, atrazine, cyanazine, desmetryne, dimethametryn, prometon, prometryne, propazine, simazine, simetryn, terbumeton, terbuthylazine, terbutryne, trietazine, hexazinone, metamitron, metribuzin, amicarbazone, bromacil, lenacil, terbacil, chloridazon, desmedipham, phenmedipham, chlorobromuron, chlorotoluron, chloroxuron, dimefuron, diuron, ethidimuron, fenuron, fluometuron, isoproturon, isouron, linuron, methabenzthiazuron, metobromuron, metoxuron, monolinuron, neburon, siduron, tebuthiuron, propanil, pentanochlor, bromofenoxim, bromoxynil, ioxynil, bentazon, pyridate and pyridafol; (b2) AHAS inhibitors selected from the group consisting of amidosulfuron, azimsulfuron, bensulfuron-methyl, chlorimuron-ethyl, chlorsulfuron, cinosulfuron, cyclosulfamuron, ethametsulfuron-methyl, ethoxysulfuron, flazasulfuron, flupyrsulfuron-methyl (including sodium salt), foramsulfuron, halosulfuron-methyl, imazosulfuron, iodosulfuron-methyl (including sodium salt), mesosulfuron-methyl, metazosulfuron, metsulfuron-methyl, nicosulfuron, oxasulfuron, primisulfuron-methyl, propyrisulfuron, prosulfuron, pyrazosulfuron-ethyl, rimsulfuron, sulfometuron-methyl, sulfosulfuron, thifensulfuron-methyl, triasulfuron, tribenuron-methyl, trifloxysulfuron (including sodium salt), triflusulfuron-methyl, tritosulfuron, imazapic, imazamethabenz-methyl, imazamox, imazapyr, imazaquin, imazethapyr, cloransulam-methyl, diclosulam, florasulam, flumetsulam, metosulam, penoxsulam, bispyribac-sodium, pyribenzoxim, pyriftalid, pyrithiobac-sodium, pyriminobac-methyl, thiencarbazone, flucarbazone-sodium and propoxycarbazone-sodium; (b3) ACCase inhibitors selected from the group consisting of clodinafop, cyhalofop, diclofop, fenoxaprop, fluazifop, haloxyfop, propaquizafop, quizalofop, alloxydim, butroxydim, clethodim, cycloxydim, pinoxaden, prof oxydim, sethoxydim, tepraloxydim and tralkoxydim, including resolved forms such as fenoxaprop-P, fluazifop-P, haloxyfop-P and quizalofop-P and ester forms such as clodinafop-propargyl, cyhalofop-butyl, diclofop-methyl and fenoxaprop-P-ethyl; (b4) auxin mimics selected from the group consisting of aminocyclopyrachlor, aminopyralid benazolin-ethyl, chloramben, clomeprop, clopyralid, dicamba, 2,4-D, 2,4-DB, dichlorprop, fluoroxypyr, mecoprop, MCPA, MCPB, 2,3,6-TBA, picloram, triclopyr, quinclorac, and quinmerac; and (b5) EPSP inhibitors selected from the group consisting of glyphosate, esters thereof, and salts thereof.

12. The herbicidal mixture of claim 11 comprising (a) a compound of claim 1 and (b) at least one additional active ingredient selected from (b1) photosystem II inhibitors selected from the group consisting of ametryn, atrazine, cyanazine, desmetryne, dimethametryn, prometon, prometryne, propazine, simazine, simetryn, terbumeton, terbuthylazine, terbutryne, trietazine, hexazinone, metamitron, metribuzin, amicarbazone, bromacil, lenacil, terbacil, chloridazon, desmedipham, phenmedipham, chlorobromuron, chlorotoluron, chloroxuron, dimefuron, diuron, ethidimuron, fenuron, fluometuron, isoproturon, isouron, linuron, methabenzthiazuron, metobromuron, metoxuron, monolinuron, neburon, siduron, tebuthiuron, propanil, pentanochlor, bromofenoxim, bromoxynil, ioxynil, bentazon, pyridate and pyridafol.

13. The herbicidal mixture of claim 12 wherein (b) is bromoxynil.

14. The herbicidal mixture of claim 12 wherein (b) is dimethametryn.

15. A herbicidal composition comprising a compound of claim 1 and at least one component selected from the group consisting of surfactants, solid diluents and liquid diluents.

16. A herbicidal composition comprising a compound of claim 1 , at least one additional active ingredient selected from the group consisting of other herbicides and herbicide safeners, and at least one component selected from the group consisting of surfactants, solid diluents and liquid diluents.

17. A method for controlling the growth of undesired vegetation comprising contacting the vegetation or its environment with a herbicidally effective amount of a compound of claim 1 .