Process for the manufacture of 5-(2-chloro-4- trifluoromethylphenoxy)-2-nitro-α-substituted acetophenones with herbicidal effects

摘要

5-(2-chloro-4-trifluoromethylphenoxy)-2-nitro-α- substituted acetophenones with herbicidal effects represented by the formula in which R1 and Y are as defined in the description, process for the preparation of the same, herbicide composition and method for the destruction of weeds. Herbicides comprising the above compounds are capable of selectively controlling weeds among crop plants.