Herbicidal diphenyl ether compounds of the formula:
or a tautomer thereof, and salts thereof, wherein R1 is an alkyl group optionally substituted by halogen or phenyl; R2 is hydrogen, halogen or nitro; R3 is hydrogen, halogen, alkyl, trifluoromethyl, or cyano; R4 is hydrogen, halogen, or trifluoromethyl; R5 is halogen or trifluoromethyl; and R6 is hydrogen, or C1-C4 alkyl. These compounds are useful as selective herbicides in a range of crops, for example cotton, soya bean, peas, maize, wheat and rice.
式中的
二苯醚除草剂化合物或其同系物及其盐类,其中 R1 是任选被卤素或苯基取代的烷基;R2 是氢、卤素或硝基;R3 是氢、卤素、烷基、三
氟甲基或
氰基;R4 是氢、卤素或三
氟甲基;R5 是卤素或三
氟甲基;R6 是氢或 C1-C4 烷基。 这些化合物可作为选择性
除草剂用于多种作物,例如棉花、大豆、豌豆、玉米、小麦和
水稻。