A new method for the synthesis and herbicidal activity of 3-phenoxy-6-(<i>1H-</i>(substituted)pyrazol-1-yl) pyridazines
作者:Fang-Zhong Hu、Gui-Feng Zhang、Bin Liu、Xiao-Mao Zou、You-Quan Zhu、Hua-Zheng Yang
DOI:10.1002/jhet.120
日期:2009.7
3-chloro-6-hydrazinyl pyridazine with 3-dimethylamino-acrylaldehyde or ethyl 2-((dimethylamino) methylene)-3-oxobutanoate in n-butanol under reflux, respectively, and side products or were also generated. All of the title compounds were confirmed by 1H NMR, infrared spectometry (IR) and elemental analyses. Preliminary bioassay indicated that some of the title compounds showed high inhibitory activity against Brassica
由各种酚的缩合反应合成了一系列3-取代的苯氧基-6-((取代的)1H-吡唑-1-基)哒嗪。3-氯-6-(1H-吡唑-1-基)哒嗪 或3-氯-6-(5'-甲基-4-乙氧基羰基-1H-吡唑-1-基)哒嗪 在 N,N-二甲基甲酰胺(DMF)在120°C,以K 2 CO 3为酸受体。中间体 或者 从环化获得3-氯-6-肼基哒嗪 和 3-二甲基氨基丙烯醛或乙基-2 - ((二甲基氨基)亚甲基)-3-氧代丁酸在正丁醇及回流副产物 或者 也产生了。所有标题化合物均通过1 H NMR,红外光谱(IR)和元素分析确认。生物活性测试表明,部分标题化合物显示高的抑制活性对油菜L.(白菜型油菜)和中度抑制活性对稗草。例如,化合物的抑制百分比 和 10μg/ mL时对菜子双歧杆菌的抗药性均为94%。J.杂环化学,(2009)。