Novel compounds having the formula
in which X is (H)2 or (CH3)2; Y is oxygen or sulfur; R1 is alkyl, lower alkenyl, cyclopropyl, lower alkoxy, thio-lower alkyl or
; R2 and R, are independently hydrogen, lower alkyl, lower alkenyl, or lower alkoxy and n is 0 or 1. The compounds have been found to possess herbicidal activity.
新型化合物,其式中 X 为 (H)2 或 (
CH3)2;Y 为氧或
硫;R1 为烷基、低级烯基、环丙基、低级烷氧基、
硫代低级烷基或;R2 和 R,独立地为氢、低级烷基、低级烯基或低级烷氧基,n 为 0 或 1。