Compounds defined by the generic formula ##STR1## wherein R is selected from the group consisting of C.sub.1 -C.sub.6 alkyl including methyl, ethyl, propyl, butyl, pentyl and hexyl, preferably C.sub.2 -C.sub.4 alkyl including ethyl, propyl and butyl, C.sub.1 -C.sub.3 alkylthio including methylthio, ethylthio and propylthio, preferably methylthio and pentafluoroethyl; R.sub.1 is selected from the group consisting of hydrogen, methyl and ethyl, preferably methyl; m is 0 or 1; and n is 1 or 2, exhibit herbicidal activity.
化合物的通用公式为##STR1##其中R从以下组中选择,所述组包括C.sub.1-C.sub.6烷基,包括甲基,乙基,丙基,丁基,戊基和己基,优选C.sub.2-C.sub.4烷基,包括乙基,丙基和丁基,C.sub.1-C.sub.3烷
硫基,包括甲
硫基,乙
硫基和
丙硫基,优选甲
硫基和五
氟乙基;R.sub.1从以下组中选择,所述组包括氢,甲基和乙基,优选甲基;m为0或1;n为1或2,具有除草活性。