3-(1,3,4-THIADIAZOL-2-YL)-5-ACYLOXY(CARBAMOYLOXY)HYDANTOIN COMPOUNDS OF THE FORMULA: ##STR1## in which R is alkyl, haloalkyl, alkylmercapto or alkylsulfonyl, R.sup.1 is alkyl, and R.sup.2 is alkylcarbonyl, alkoxycarbonyl, alkylcarbamoyl or optionally substituted arylcarbonyl; Are remarkably active as herbicides and are particularly useful as selective herbicides in cotton cultivations or in cereal crops, including corn.
化学式为:##STR1## 其中R为烷基、卤代烷基、烷基
硫醇或烷基磺酰基,R.sup.1为烷基,R.sup.2为烷基羰基、烷氧羰基、烷基
氨基甲酰基或可选取代芳基羰基。这些化合物在
除草剂方面具有显著的活性,并且在棉花种植或谷物作物,包括玉米中作为选择性
除草剂特别有用。