合成了包含1,3,4-噻二唑环部分的三系列新型2-氰基丙烯酸酯7a - 7f,9a - 9f,10a - 10f作为光电子系统II(PS II)电子传输的除草抑制剂。其结构已通过1 H NMR,13 C NMR,元素分析(或HRMS分析)和单晶X射线衍射分析得到了清晰验证。生物测定表明,丙烯酸酯的3位有一个合适的基团对于高除草活性至关重要。特别是化合物7e表现出最好的除草活性,并以1.5 kg / ha的剂量对油菜和a菜杂草具有100%的抑制作用。将具有更高极性的取代基(例如亚磺酰基或磺酰基)引入1,3,4-噻二唑的5位会降低除草活性。
两个系列的2-氰基-3-取代的吡啶甲基氨基丙烯酸酯,即12种新的(Z)-2-氰基-3-甲硫基-3-取代的吡啶甲烷氨基丙烯酸酯和10种新的(Z)-2-氰基-3-烷基-3-丙烯酸酯取代的吡啶甲烷氨基丙烯酸酯被合成为光系统II(PSII)电子传输的除草抑制剂。所有这些化合物都通过(1)NMR,元素,IR和质谱分析证实。对它们的除草活性进行了评估。一些化合物即使在75 g / ha的剂量下也表现出优异的除草活性。吡啶环的2位上合适的取代基和丙烯酸酯的3位上合适的基团对于高除草活性至关重要。含有取代吡啶环的2-氰基丙烯酸酯比含有苯基的母体化合物具有更高的除草活性。
data showed that the compounds containing benzene, pyridine, and thiazole moieties gave higher activities than those containing pyrimidine, pyridazine, furan, and tetrahedronfuran moieties. To further explore the comprehensive structure-activity relationship on the basis of in vitro data, comparative molecular field analysis (CoMFA) was performed, and the results showed that a bulky and electronegative
Design, Synthesis, and Biological Activities of Novel 2-Cyanoacrylates Containing Oxazole, Oxadiazole, or Quinoline Moieties
作者:Qiqi Zhao、Shaohua Liu、Yonghong Li、Qingmin Wang
DOI:10.1021/jf803632t
日期:2009.4.8
A series of novel 2-cyanoacrylatescontaining an oxazole, oxadiazole, or quinoline moiety were designed and synthesized, and their structures were characterized by 1H NMR and elemental analysis (or high-resolution mass spectrometry). Their herbicidal activities against four weeds were evaluated, and the result indicated that some of the title compounds showed excellent herbicidal activities against
设计并合成了一系列含有恶唑,恶二唑或喹啉部分的新型2-氰基丙烯酸酯,并通过1 H NMR和元素分析(或高分辨率质谱)对它们的结构进行了表征。评估了它们对四种杂草的除草活性,结果表明,某些标题化合物在375 g / ha剂量的芽后处理中显示出优异的对油菜和a菜杂草的除草活性。此外,大多数这些氰基丙烯酸酯表现出有趣的植物生长调节活性。
Design, Synthesis, and Herbicidal Activities of Novel 2-Cyanoacrylates Containing Isoxazole Moieties
作者:Yuxiu Liu、Zhipeng Cui、Bin Liu、Baoli Cai、Yonghong Li、Qingmin Wang
DOI:10.1021/jf902541w
日期:2010.3.10
A series of novel 2-cyanoacrylatescontaining an isoxazole moiety were designed and synthesized. Their structures were characterized by 1H NMR and elemental analysis (or high-resolution mass spectrometry). Their herbicidal activities against four species were evaluated, and the results indicated that some of the title compounds showed excellent herbicidal activities against rape and amaranth pigweed
设计并合成了一系列含有异恶唑部分的新型2-氰基丙烯酸酯。它们的结构通过1 H NMR和元素分析(或高分辨率质谱)表征。评价了它们对四种物种的除草活性,结果表明,即使在75 g / ha的剂量下,某些标题化合物在出苗后处理中也表现出优异的对油菜和a菜杂草的除草活性。
Synthesis, crystal structure, and herbicidal activity of novel 1,2,3-thiadiazole substituted 2-cyanoacrylates
作者:Fang Jianxin、Wang Tingting、Bing Guifang、Zhang Xin、Qin Zhenfang、Yu Haibo、Qin Xue、Dai Hong
DOI:10.3998/ark.5550190.0011.228
日期:——
A series of novel2-cyanoacrylates containing the 1,2,3-thiadiazole ring moiety were synthesized and characterized by 1 H NMR, 13 C NMR, elemental analysis and, in one case, by X-ray crystallography. Most of these cyanoacrylates exhibited good herbicidalactivities. In particular, (Z)-methoxyethyl- and (Z)-ethoxyethyl-2-cyano-3-isopropyl-3-(4-methyl-1,2,3-thiadiazol-5yl)methylaminoacrylate 9h and 9g
合成了一系列含有 1,2,3-噻二唑环部分的新型 2-氰基丙烯酸酯,并通过 1 H NMR、13 C NMR、元素分析和 X 射线晶体学进行了表征。大多数这些氰基丙烯酸酯表现出良好的除草活性。特别地,(Z)-甲氧基乙基-和(Z)-乙氧基乙基-2-氰基-3-异丙基-3-(4-甲基-1,2,3-噻二唑-5基)甲基氨基丙烯酸酯9h和9g表现出100%的除草活性以 1.5 公斤/公顷的剂量对抗油菜和苋菜。含有噻二唑环的 2-氰基丙烯酸酯是此类化合物的新变体,仍保留除草活性。
Synthesis and Herbicidal Activity of 2-Cyano-3-(2-chlorothiazol-5-yl)methylaminoacrylates
作者:Qingmin Wang、Heng Li、Yonghong Li、Runqiu Huang
DOI:10.1021/jf035312a
日期:2004.4.1
series of 2-cyano-3-(2-chlorothiazol-5-yl)methylaminoacrylates were synthesized as herbicidal inhibitors of PSII electron transport. All of these compounds exhibited good herbicidalactivities. In particular, (Z)-ethoxyethyl 2-cyano-3-isopropyl-3-(2-chlorothiazol-5-yl)methylaminoacrylate showed excellent herbicidalactivities even at a dose of 75 g/ha. A suitable group at the 3-position of acrylate was essential