为了寻找高效、安全、经济的除草活性化合物,设计并合成了9个新的2-[2-(烷氧羰基苯氧羰基)苯氧基]-4,6-二甲氧基嘧啶类化合物,其化学结构经IR,1HNMR,LC/MS和元素分析确证.初步生物活性测定结果表明,该类化合物在有效成份2250g/ha剂量时,对苘麻(Abutilontheophrasti)、稗草(Echinochloacrus-galli)、狗尾草(Setariaviridis)等都具有良好的除草活性,抑制率达90%以上.其中5b,5e,5h在187.5g/ha剂量时,仍具有良好的除草活性,抑制率达90%以上. In order to find an efficient, safe and economical herbicidal active compound, 9 new 2- [2- (alkoxycarbonylphenoxycarbonyl) phenoxy] -4,6-dimethoxypyrimidines were designed and synthesized. The chemical structure was confirmed by IR, 1HNMR, LC / MS and elemental analysis.The results of preliminary bioassay showed that the compounds exhibited excellent antibacterial activity against Abutilontheophrasti, Echinochloa crus-galli, Setariaviridis, etc. all had good herbicidal activity with the inhibition rate of more than 90%, of which, the herbicidal activity of 5b, 5e, 5h was 187.5g / ha and the inhibition rate was more than 90%.