The present invention provides 1-[2-(cyclopropylcarbonyl)-4-fluorophenyl]sulfamoyl}-3-(4,6-dimethoxy-2-p yrimidinyl)urea which has the structural formula I ##STR1## Further provided are compositions and methods comprising that compound for the control of undesirable plant species.
The present invention provides 1-[2-(cyclopropylcarbonyl)-4-fluorophenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea which has the structural formula I
Further provided are compositions and methods comprising that compound for the control of undesirable plant species.
本发明提供 1-[2-(环丙基羰基)-4-氟苯基]氨基磺酰基}-3-(4,6-二甲氧基-2-嘧啶基)脲,其结构式为 I
进一步提供了包含该化合物的用于控制不良植物物种的组合物和方法。
Method for the preparation of 4-halo-2'-nitrobutyrophenone
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0682007A1
公开(公告)日:1995-11-15
The present invention provides a method for the preparation of a 4-halo-2'-nitrobutyrophenone compound having the structural formula I
which
comprises reacting a 2-nitrobenzoyl halide compound having the structural formula
wherein X and R are as described above with at least one molar equivalent of the magnesium enolate of acetyl-butyrolactone in the presence of a solvent at an elevated temperature and optionally concentrating the resultant reaction mixture by distillation of the solvent.
The formula I compound is an important intermediate in the manufacture of a sulfamoyl urea herbicidal agent.
本发明提供了一种具有结构式 I 的 4-卤代-2'-硝基丁酮化合物的制备方法
其中
包括使具有结构式 I 的 2-硝基卤代苯甲酰基化合物反应
其中 X 和 R 如上所述,与至少一个摩尔当量的乙酰丁内酯镁烯酸盐在溶剂存在下于高温下反应,并可选择通过蒸馏溶剂浓缩反应混合物。
式 I 化合物是生产氨基磺酰基脲除草剂的重要中间体。