4,6-dibromo-2-cyano-pyrimidin-5-olate sodium salt | 1526988-40-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 三嗪类
• 英文名称: 4,6-dibromo-2-cyano-pyrimidin-5-olate sodium salt
• 英文别名: sodium 4,6-dibromo-2-cyanopyrimidin-5-olate
• CAS: 1526988-40-8
• 化学式: C₅Br₂N₃O*Na
• 分子量: 300.872
• InChiKey: WAAALSZGOQRWRD-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  -2.05
• 重原子数：
  12.0
• 可旋转键数：
  0.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  72.63
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  2-氰基-5-羟基嘧啶 在 盐酸 、 sodium bromate 、 sodium bromide 作用下， 以 水 为溶剂， 反应 24.0h， 生成 4,6-dibromo-2-cyano-pyrimidin-5-olate sodium salt
  参考文献：
  名称：

  Synthesis and Evaluation of Heterocyclic Analogues of Bromoxynil

  摘要：

  One attractive strategy to discover more active and/or crop-selective herbicides is to make structural changes to currently registered compounds. This strategy is especially appealing for those compounds with limited herbicide resistance and whose chemistry is accompanied with transgenic tools to enable herbicide tolerance in crop plants. Bromoxynil is a photosystem II (PSII) inhibitor registered for control of broadleaf weeds in several agronomic and specialty crops. Recently at the University of Tennessee-Knoxville several analogues of bromoxynil were synthesized including a previously synthesized pyridine (2,6-dibromo-5-hydroxypyridine-2-carbonitrile sodium salt), a novel pyrimidine (4,6-dibromo-5-hydroxypyrimidine-2-carbonitrile sodium salt), and a novel pyridine N-oxide (2,6-dibromo-1-oxidopyridin-1-ium-4-carbonitrile). These new analogues of bromoxynil were also evaluated for their herbicidal activity on soybean (Glycine max), cotton (Gossypium hirsutum), redroot pigweed (Amaranthus retroflexus), velvetleaf (Abutilon theophrasti), large crabgrass (Digitaria sanguinalis), and pitted morningglory ( Ipomoea lacunose ) when applied at 0.28 kg ha(-1). A second study was conducted on a glyphosate-resistant weed (Amaranthus palmeri) with the compounds being applied at 0.56 kg ha(-1). Although all compounds were believed to inhibit PSII by binding in the quinone binding pocket of D1, the pyridine and pyridine-N-oxide analogues were clearly more potent than bromoxynil on Amaranthus retroflexus. However, application of the pyrimidine herbicide resulted in the least injury to all species tested. These variations in efficacy were investigated using molecular docking simulations, which indicate that the pyridine analogue may form a stronger hydrogen bond in the pocket of the D1 protein than the original bromoxynil. A pyridine analogue was able to control the glyphosate-resistant Amaranthus palmeri with >80% efficacy. The pyridine analogues of bromoxynil showed potential to have a different weed control spectrum compared to bromoxynil. A pyridine analogue of bromoxynil synthesized in this research controlled several weed species greater than bromoxynil itself, potentially due to enhanced binding within the PSII binding pocket. Future research should compare this analogue to bromoxynil using optimized formulations at higher application rates.

  DOI：

  10.1021/jf404209d