As new compounds are provided 2-(4′,6′-di-substituted pyrimidine-2′-yl)oxy- or thio-benzoic acid derivatives of the formula
wherein R is hydrogen, hydroxy, alkoxy, alkenyloxy, alkylthio or other substituents, R¹ and R² are each a halo, alkyl, alkoxy or other substituents; and X is oxygen or sulfur atom. These new compounds are useful as herbicidal agent effective to inhibit the growth of annual weeds and also perennial weeds predominant in irrigated fields of aquatic rice plants and in ploughed fields.
作为新化合物,提供了 2-(4′,6′-二取代
嘧啶-2′-基)氧基或
硫代苯甲酸衍
生物,其式为
其中R是氢、羟基、烷氧基、烯氧基、烷
硫基或其它取代基,R¹和R²各自是卤代、烷基、烷氧基或其它取代基;X是氧原子或
硫原子。这些新化合物可用作
除草剂,有效抑制一年生杂草和多年生杂草的生长,这些杂草主要生长在
水稻灌溉田和耕地中。