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以3-(2-氯-4-三氟甲基苯氧基)苯甲酸为起始原料,经氯化亚砜氯化后得中间体3-(2-氯-4-三氟甲基苯氧基)苯甲酰氯(1),再与不同取代的苯酚反应,合成了13个未见文献报道的3-(2-氯-4-三氟甲基苯氧基)苯甲酸酯(2).通过1H NMR,IR,EI-MS和元素分析对所合成的化合物进行了结构表征,3-甲基苯基3-(2-氯-4-三氟甲基苯氧)苯甲酸酯(2f)通过单晶X射线衍射进一步确证结构.初步的除草活性测试结果表明:大多数目标化合物在1.5 kg/ha剂量下对双子叶植物油菜和苋菜具有较高的抑制活性.
Starting from 3- (2-chloro-4-trifluoromethylphenoxy) benzoic acid and chlorinating with thionyl chloride, the intermediate 3- (2-chloro-4- trifluoromethylbenzene (1) were synthesized and then reacted with different substituted phenols to synthesize 13 unreported 3- (2-chloro-4-trifluoromethylphenoxy) benzoate (2 ). The synthesized compounds were characterized by 1H NMR, IR, EI-MS and elemental analysis. 3-Methylphenyl 3- (2-chloro-4-trifluoromethylphenoxy) benzoate (2f) The structure was further confirmed by single crystal X-ray diffraction.The preliminary herbicidal activity test results showed that most of the target compounds exhibited high inhibitory activity against dicotyledonous rape and amaranth at a dose of 1.5 kg / ha.