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.
二苯醚的
化学式为:##STR1## 其中A是氢或指定范围的取代基之一,例如卤素、羟基、卤代烷基,B、C、E和F是氢或指定的取代基;D是CF.sub.3、卤素或其他指定的取代基;R是一个基团--CONR.sup.4 SO.sub.2 R.sup.3,其中R.sup.4是氢或C.sub.1到C.sub.4烷基,R.sup.3是一个可选择取代的烷基、烯基、炔基或芳基基团;用作选择性
除草剂。