通过2-(4,6-二甲氧基嘧啶-2-氧基)苯甲醛(1)与芳氧乙酰肼2的缩合反应,合成了10个含嘧啶结构的芳氧乙酰腙化合物3,其结构经1H NMR、IR、EI-MS或ESI-MS和元素分析测试技术确证.除草活性测试(活体盆栽)结果表明,大部分目标化合物在1.5 kg/hm2浓度下,无论苗前或苗后处理对苋菜均显示出很强抑制活性,化合物3e和3h的抑制率分别为100％和97.7％,而化合物3a、3b、3d、3e、3f和3h苗后处理对苋菜的抑制率均超过97％,对马唐的除草活性最差.苯环4-位取代基性质对除草活性有规律性影响.
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