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以水杨醛为原料,经取代、加成和消除反应合成了6个标题化合物(3a～3f),其中4个(3a～3d)为新化合物,其结构经核磁共振氢谱、质谱和元素分析确认。初步的除草活性测试结果表明,在有效成分150 g/hm2的剂量下,除化合物3f对稗草Echinochloa crus-galli的抑制率为55%外,其余5个化合物对供试杂草的抑制率均在80%以上,部分化合物对稗草、早熟禾Poa annua、反枝苋Amaranthus retroflexus或小藜Chenopodium album的抑制率达100%。
Six of the title compounds (3a ~ 3f) were synthesized from salicylaldehyde via substitution, addition and elimination reactions. Four of them (3a ~ 3d) were new compounds and their structures were confirmed by 1H NMR, MS and elemental analysis Analysis confirmed. The results of preliminary herbicidal activity tests showed that the inhibitory rates of the other five compounds on weeds were all lower than the control at the dose of 150 g / hm2 of the active ingredient except that the inhibition rate of the compound 3f to the Echinochloa crus-galli was 55% Above 80%, the inhibitory rate of some compounds to barnyard grass, Poa annua, Amaranthus retroflexus or Chenopodium album was 100%.