Herbicides

A compound of formula I

• wherein
• R1 and R2 are independently of each other hydrogen, C1-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C1-C6haloalkyl, C2-C6haloalkenyl, C1-C6alkoxy, C3-C6alkenyloxy, C3-C6haloalkenyloxy, C3-C6alkynyloxy, C1-C4alkoxyC1-C4alkyl, C1-C4alkoxyC1-C4alkoxy, C1-C4alkoxyC1-C4alkoxyC1-C4alkyl, C1-C6alkylthio, C1-C4alkylthioC1-C4alkyl, C1-C4alkylsulfinyl, C1-C4alkylsulfinylC1-C4alkyl, C1-C4alkylsulfonyl, C1-C4alkylsulfonylC1-C4alkyl, hydroxy-C1-C4alkyl, C1-C6haloalkoxyC1-C4alkyl, C3-C6alkenyloxyC1-C4alkyl, C3-C6haloalkenyloxyC1-C4alkyl, C3-C6alkynyloxyC1-C4alkyl, C1-C6cyanoalkyl, C1-C6cyanoalkoxy, C1-C4cyanoalkoxyC1-C4alkyl, hydroxy, C1-C6alkylcarbonyl, carboxy, C1-C6alkoxycarbonyl, C1-C6alkylaminocarbonyl, di-C1-C6alkylaminocarbonyl, tri(C1-C4alkyl)silyl or tri(C1-C4alkyl)silyloxy,
• D is optionally substituted C1-C3alkylene,
• E is optionally substituted C1-C3alkylene or optionally substituted C2-C3alkenylene,
• Het is a an optionally substituted monocyclic or bicyclic heteroaromatic ring;
• and
• G is hydrogen, an alkali metal, alkaline earth metal, sulfonium, ammonium or a latentiating group.