PROCEDIMIENTO PARA LA PREPARACION DE AGENTES HERBICIDAS A BASE DE FENILETERES HETEROCICLICOS

摘要

Compounds of formula (I) wherein R is halogen, CF3, NO2, CN, (C1-C4)alkyl or (C1-C4)-alkoxy, n is zero or 1, X is O, S, NH, or N-(C1-C4)alkyl, 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.