1-(2-bromo-4-fluoro-5-nitrophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazol-5-one | 1435478-02-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 1-(2-bromo-4-fluoro-5-nitrophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazol-5-one
• CAS: 1435478-02-6
• 化学式: C₁₀H₆BrF₃N₄O₃
• 分子量: 367.082
• InChiKey: OUHNBZPYBMIPJM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.55
• 重原子数：
  21.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  82.96
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  1-(2-bromo-4-fluoro-5-nitrophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazol-5-one 在 铁粉 、 potassium carbonate 、 氯化铵 作用下， 以 乙醇 、 水 、 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 7.17h， 生成 ethyl {6-bromo-5-[4-difluoromethyl-3-methyl-5-oxo-4,5-dihydro-1,2,4-triazol-1-yl]benzothiazol-2-ylthio}acetate
  参考文献：
  名称：

  Design and synthesis of 1-(benzothiazol-5-yl)-1H-1,2,4-triazol-5-ones as protoporphyrinogen oxidase inhibitors

  摘要：

  Protoporphyrinogen oxidase (PPO, E.C. 1.3.3.4) is the action target for several structurally diverse herbicides. A series of novel 4-(difluoromethyl)-1-(6-halo-2-substituted-benzothiazol-5-yl)-3-methyl-1H-1,2,4-triazol-5(4H)-ones 2a-z were designed and synthesized via the ring-closure of two ortho-substituents. The in vitro bioassay results indicated that the 26 newly synthesized compounds exhibited good PPO inhibition effects with K-i values ranging from 0.06 to 17.79 mu M. Compound 2e, ethyl 2-{[5-(4-(difluoromethyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)-6-fluorobenzo-thiazol-2-yl]thio}acetate, was the most potent inhibitor with K-i value of 0.06 mu M against mtPPO, comparable to (K-i = 0.03 mu M) sulfentrazone. Further green house assays showed that compound 2f (K-i = 0.24 mu M, mtPPO), ethyl 2-{[5-(4(difluoromethyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)-6-fluorobenzothiazol-2-yl]thio}propanoate, showed the most promising post-emergence herbicidal activity with broad spectrum even at concentrations as low as 37.5 g ai/ha. Soybean exhibited tolerance to compound 2f at the dosages of 150 g ai/ha, whereas they are susceptible to sulfentrazone even at 75 g ai/ha. Thus, compound 2f might be a potential candidate as a new herbicide for soybean fields. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2013.03.056
• 作为产物：
  描述：

  1-(2-bromo-4-fluorophenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one 在 硫酸 、 四丁基溴化铵 、 硝酸 、 potassium hydroxide 作用下， 以 四氢呋喃 为溶剂， 生成 1-(2-bromo-4-fluoro-5-nitrophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazol-5-one
  参考文献：
  名称：

  Design and synthesis of 1-(benzothiazol-5-yl)-1H-1,2,4-triazol-5-ones as protoporphyrinogen oxidase inhibitors

  摘要：

  Protoporphyrinogen oxidase (PPO, E.C. 1.3.3.4) is the action target for several structurally diverse herbicides. A series of novel 4-(difluoromethyl)-1-(6-halo-2-substituted-benzothiazol-5-yl)-3-methyl-1H-1,2,4-triazol-5(4H)-ones 2a-z were designed and synthesized via the ring-closure of two ortho-substituents. The in vitro bioassay results indicated that the 26 newly synthesized compounds exhibited good PPO inhibition effects with K-i values ranging from 0.06 to 17.79 mu M. Compound 2e, ethyl 2-{[5-(4-(difluoromethyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)-6-fluorobenzo-thiazol-2-yl]thio}acetate, was the most potent inhibitor with K-i value of 0.06 mu M against mtPPO, comparable to (K-i = 0.03 mu M) sulfentrazone. Further green house assays showed that compound 2f (K-i = 0.24 mu M, mtPPO), ethyl 2-{[5-(4(difluoromethyl)-3-methyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)-6-fluorobenzothiazol-2-yl]thio}propanoate, showed the most promising post-emergence herbicidal activity with broad spectrum even at concentrations as low as 37.5 g ai/ha. Soybean exhibited tolerance to compound 2f at the dosages of 150 g ai/ha, whereas they are susceptible to sulfentrazone even at 75 g ai/ha. Thus, compound 2f might be a potential candidate as a new herbicide for soybean fields. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2013.03.056

文献信息

• Syntheses and Herbicidal Activities of Novel Triazolinone Derivatives
  作者：Yan-Ping Luo、Li-Li Jiang、Guo-Dong Wang、Qiong Chen、Guang-Fu Yang

  DOI：10.1021/jf703654g

  日期：2008.3.1

  triazolinones 1 displayed much better herbicidal activities than phenylurea-type triazolinones 2. Most fortunately, compound 3, methyl 2-[3-methyl-(2-fluoro-4-chloro-5-ethylsulfonamidephenyl)-4,5-dihydro-5-oxo-1 H-1,2,4-triazol-4-yl]methylenephenyl-2-( E)-methoxyiminoacetate, was found to be the most promising candidate due to its comparable herbicidal activity at 75-150 g of active ingredient/ha with

  原卟啉原氧化酶（Protox，EC 1.3.3.4）已被确定为除草剂最重要的作用靶标之一。为了寻找新型的Protox抑制剂，通过引入三种药效基团，环酰亚胺，苯基脲和（E）-2-甲氧基亚氨基-2-邻甲苯基乙酸甲酯，设计并合成了一系列标题化合物1、2和3，进入三唑啉酮的支架中。生物测定结果表明，所得到的环状酰亚胺型三唑啉酮1具有比苯脲型三唑啉酮2更好的除草活性。最幸运的是，化合物3是甲基2- [3-甲基-（2-氟-4-氯-5-）乙基磺酰胺苯基）-4,5-二氢-5-氧代-1 H-1,2,4-三唑-4-基]亚甲基苯基-2-（E）-甲氧基亚氨基乙酸酯，被发现是最有前途的候选物，因为其在75-150 g活性成分/公顷下的除草活性与商业产品次磺en相当。根据除草谱和作物选择性的测试结果，可以开发出化合物3作为芽后除草剂，用于防治稻田阔叶杂草。