Herbicidal compounds

A compound of formula (I) or an agronomically acceptable salt thereof:

• wherein
• each X1, X2 and X3 is independently selected from oxygen and sulfur;
• Y is C—H or nitrogen;
• B is O, S, or NR5;
• D is (CR6R7)n;
• m is an integer from 0 to 2;
• n is an integer from 1 to 4;
• R1 is hydrogen or C1-C6alkyl;
• R2 is hydrogen, amino, C1-C6alkyl, C3-C6alkenyl, or C3-C6alkynyl;
• R3 is hydrogen, halogen, C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4alkylthio, or C1-C4alkylsulfonyl;
• R4 is hydrogen, halogen, cyano, nitro, aminocarbonyl, aminothiocarbonyl, C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, or C1-C4alkylsulfonyl;
• R5 is hydrogen, hydroxy, C1-C6alkyl, or C1-C4alkoxy;
• Each R6 and R7 is independently selected from hydrogen, halogen, C1-C6alkyl, C1-C6haloalkyl, hydroxy, C1-C4alkoxy, C1-C4alkoxycarbonyl, or CH2OR12;
• provided that R6 and R7 are not both hydroxy on the same carbon atom;
• or two groups R6 and R7, on the same or different carbon atoms, together form a C1-C5alkylene chain, which contain 0, 1 or 2 oxygen atoms, substituted by 1-3 groups R5;
• or two groups R6 and R7, on the same carbon atom, together with the carbon to which they are attached, form a C2alkene;
• R8 is OR9, SR9, or NR10R11;
• R9 is hydrogen, C1-C10alkyl, C1-C10haloalkyl, C3-C6alkenyl, C3-C6haloalkenyl, C3-C6alkynyl, C1-C4alkoxyC1-C6alkyl, C1-C4haloalkoxyC1-C6alkyl, C6-C10arylC1-C3alkyl, C6-C10arylC1-C3alkyl substituted by 1-4 groups R13, heteroarylC1-C3alkyl, or heteroarylC1-C3alkyl substituted by 1-3 groups R3;
• R10 is hydrogen, C1-C6alkyl, or SO2R14;
• R11 is hydrogen or C1-C6alkyl;
• or
• R10 and R11 together with the nitrogen to which they are attached form a 3- to 6-membered heterocyclyl ring, which optionally contains an oxygen atom;
• R12 is hydrogen, C1-C4alkyl, or C1-C4alkylcarbonyl;
• each R13 is independently selected from halogen, C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy, C1-C4haloalkoxy, cyano, and C1-C4alkylsulfonyl;
• R14 is C1-C4alkyl, C1-C4haloalkyl, or C1-C4alkyl(C1-C4alkyl)amino;
• each R15 is independently selected from hydrogen, halogen, C1-C4alkyl, and C1-C4haloalkyl;
• R16 and R17 are independently selected from hydrogen, halogen, C1-C6alkyl, C1-C6haloalkyl, C1-C4alkoxy, and CH2OR12;
• or two groups R16 and R17, together form a C2-C5alkylene chain, which contains 0, 1 or 2 oxygen atoms, substituted by 1-3 groups R15;
• or two groups R16 and R17 together with the carbon to which they are attached form a C2alkene;
• or a salt or N-oxide thereof.