Herbicidal phenoxybenzoic acid derivatives

摘要

Herbicidally active novel phenoxybenzoic acid derivatives of the formula <IMAGE> in which R represents hydrogen, nitro or cyano, R1 represents hydrogen or alkyl and R2 and R3 are identical or different and represent hydrogen, alkyl, halogenalkyl or one equivalent of an alkali metal or alkaline earth metal ion, or R2 and R3 together represent an optionally substituted alkanediyl radical.