作者:Hai-Qin He、Xing-Hai Lie、Jian-Quan Weng、Cheng-Xia Tan
DOI:10.2174/1570180813666160805150148
日期:2016.12.21
Some novel pyrazole derivatives were designed and synthesized through multi-step reactions from substituted phenol as starting material. Their structures were confirmed by 1H NMR, FTIR, MS and elemental analysis. All these compounds were evaluated their herbicidal activity. The preliminary bioassay results indicated that some of title compounds displayed moderate herbicidal activity at 200 μg/mL. Among
以取代苯酚为起始原料,通过多步反应设计合成了一些新颖的吡唑衍生物。其结构由1确认1 H NMR,FTIR,MS和元素分析。评价所有这些化合物的除草活性。初步的生物测定结果表明,某些标题化合物在200μg/ mL处显示中等除草活性。其中,化合物4-氯-N'-(2-(2,5-二甲基苯氧基)乙酰基)-3-乙基-1-甲基-1H-吡唑-5-碳酰肼,4-氯-N'-( 2-(2,4-二氯苯氧基)乙酰基)-3-乙基-1-甲基-1H-吡唑-5-碳酰肼,4-氯-3-乙基-1-甲基-N'-(2-(间甲苯基氧基)乙酰基)-1H-吡唑-5-碳酰肼和4-氯-3-乙基-1-甲基-N'-(2-(3-硝基苯氧基)乙酰基)-1H-吡唑-5-碳酰肼占95%分别对菜子油菜具有100%,95%和95%的抑制作用。在进一步的生物测定中,化合物6l以150g /公顷的单子叶植物或双子叶植物表现出优异的除草活性。