Nitrodiphenyl ether herbicides

摘要

Compounds of the formula: ##STR1## wherein X is hydrogen, halo, trihalomethyl, alkyl, nitro, or cyano; X.sup.1 is hydrogen, halo, or trihalomethyl; X.sup.2 is trihalomethyl or halo; Y is O, S, NH or NR.sup. 1 ; R.sup.1 and R.sup.2 are the same or different radicals selected from hydrogen, alkyl, or mononuclear aralkyl; n is 1 to 5, and Z is carboxy, amino, mono- and dialkyl amino and when Z is carboxy; the agronomically acceptable salts, esters, thioesters and amides thereof, and compositions containing these compounds exhibit herbicidal activity.