spectrum and elemental analyses. Their herbicidal activities were evaluated. All of the title compounds showed excellent herbicidal activities to amaranth pigweed and rape in post-emergence treatment. At the rate of 150 g/ha, one compound exhibited similar activity to Cl-analogue. The replacement of chlorine by fluorine group showed the same herbicidal activity.
一系列的2-
氰基-3-(2-
氟-5- -
吡啶基)methylaminoacrylates合成为光系统II(PSII)电子传输的除草
抑制剂。由2-
氨基-5-
甲基吡啶制备2-
氟-5-
吡啶甲胺,随后与2-
氰基-3,3-
二甲基硫代
丙烯酸酯或2-
氰基-3-甲氧基
丙烯酸酯反应,得到这些标题化合物。所有这些化合物均通过1 H NMR,IR,质谱和元素分析确认。对它们的除草活性进行了评估。在出苗后的处理中,所有标题化合物均对a菜和杂菜表现出优异的除草活性。以150 g / ha的速率,一种化合物表现出与Cl-类似物相似的活性。用
氟基团代替
氯显示出相同的除草活性。