HETEROCYCLIC SUBSTITUTED 4-OXYPHENOXYALKANE-CARBOXYLIC ACID DERIVATIVES

摘要

of the disclosure: Compounds of formula (I) wherein R is halogen, CF3, NO2, CN, (C1-C4)alkyl or (C1C4)-alkoxy, n is zero or 1, X is O, S, NH, or N-(C1-C4)al-kyl, Y is O or S, R1 is H or (C1-C4)alkyl and Z is, among others, a cyanalkyl, (subst.) carbalkoxyalkyl, (subst.) carbalkoxyphenyl, sulfoxyalkyl or oxime group, are selective herbicides active especially against weed grasses.