Synthesis and Herbicidal Activity of Acylpyrazole Derivatives Containing 1,2,3-Thiadiazole Moiety
作者:Feng Cheng、De-Qing Shi
DOI:10.1002/jhet.790
日期:2012.7
The results of preliminary bioassays showed that some of the title compounds 3 exhibited moderate to good herbicidal activities against dicotyledonous plants (Brassica campestris L.) at the concentration of 100 mg/L. For example, compounds 3e, 3f, 3g, and 3k possessed 74.6%, 72.2%, 70.3%, and 84.5% inhibition against B. campestris L., respectively, whereas commercially available herbicide Sulcotrione
一系列新的含1,2,3-噻二唑环3a - 3m的酰基吡唑衍生物是通过1-苯基-3-甲基-4-取代的苯甲醛或4-甲基1,2,3-噻二唑的缩合反应合成的5-羰基)-5-羟基吡唑2与4-甲基-1,2,3-噻二唑-5-羰基氯或取代的苯甲酰氯。通过IR,1 H-NMR,质谱和元素分析确认了它们的结构。初步生物测定的结果表明,某些标题化合物3在100 mg / L的浓度下对双子叶植物(甘蓝型油菜)表现出中度至良好的除草活性。例如,化合物3e,3f,3g和3k对野菜双歧杆菌分别具有74.6%,72.2%,70.3%和84.5%的抑制作用,而市售除草剂Sulcotrione在相同浓度下仅显示35.0%的抑制作用。而且,这些化合物对野菜双歧杆菌的除草活性高于棘手chin。但是,这些化合物在10 mg / L的浓度下显示出较弱的活性。