There are provided 4-Hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitrophenyl)-2-furanol and mixtures thereof, important intermediates in the preparation of the crop-selective herbicidal agent 1-[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea. Also provided is a method for the preparation of 4-halo-2'-nitrobutyrophenone, useful as an intermediate in the preparation of 1-[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea.
本发明提供了
4-羟基-2'-硝基
苯丁酮和四氢-2-(邻
硝基苯基)-2-
呋喃酚及其混合物,它们是制备作物选择性
除草剂1-[邻(环丙基羰基)苯基]
氨基磺酰基}-3-(4,6-二甲氧基-2-
嘧啶基)
脲的重要中间体。还提供了一种制备 4-卤代-2'-硝基
苯丁酮的方法,该方法可作为制备 1-[邻(环丙基羰基)苯基]
氨基磺酰基}-3-(4,6-二甲氧基-2-
嘧啶基)
脲的中间体。