Diphenyl ethers of formula: ##STR1## wherein A is hydrogen or one of a specified range of substituents e.g. halogen, hydroxy, haloalkyl, B, C, E and F are hydrogen or specified substituents; D is CF.sub.3, halogen, or an other specified substituent; and R is a group --CONR.sup.4 SO.sub.2 R.sup.3 wherein R.sup.4 is hydrogen or C.sub.1 to C.sub.4 alkyl and R.sup.3 is an optionally substituted alkyl, alkenyl, alkynyl, or aryl radical; useful as selective herbicides.
公式为:##STR1## 其中A为氢或一系列指定的取代基,例如卤素,羟基,卤代烷基,B,C,E和F为氢或指定的取代基;D为CF.sub.3,卤素或其他指定的取代基;R为--CONR.sup.4 SO.sub.2 R.sup.3基团,其中R.sup.4为氢或C.sub.1到C.sub.4烷基,R.sup.3为可选取代的烷基,烯基,炔基或芳基基团。这些化合物可用作选择性
除草剂。