4,4'-Bis-<2,4-dihydroxy-phenylazo>-biphenyl | 6358-84-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4,4'-Bis-<2,4-dihydroxy-phenylazo>-biphenyl
• 英文别名: 4,4'-[[1,1'-Biphenyl]-4,4'-diyldi(hydrazin-2-yl-1-ylidene)]bis(3-hydroxycyclohexa-2,5-dien-1-one)；4-[[4-[4-[(2,4-dihydroxyphenyl)diazenyl]phenyl]phenyl]diazenyl]benzene-1,3-diol
• CAS: 6358-84-5
• 化学式: C₂₄H₁₈N₄O₄
• 分子量: 426.431
• InChiKey: FQGMJPPISZVDDC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.7
• 重原子数：
  32
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  130
• 氢给体数：
  4
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  二(重氮基)对二氨基联苯 、 联苯胺 、 间苯二酚 在 硝酸 、 sodium nitrite 、 sodium hydroxide 作用下， 以 乙醇 、 水 为溶剂， 生成 4,4'-Bis-<2,4-dihydroxy-phenylazo>-biphenyl
  参考文献：
  名称：

  利用反硝化反应并与联苯胺试剂偶联的分光光度法测定苯酚、儿茶酚和间苯二酚。

  摘要：

  ABSTRACTA spectrophotometric method was developed for the determination of phenol, catechol and resorcinol. The method based on the reaction of diazonium salt with diazotized benzene as a reagent in the alkaline medium. The products show the maximum absorption at 456, 359 and 497 nm for phenol, catechol and resorcinol respectively. The method showed linearity over concentration ranging between (0.25-15), (0.25-5) and (0.25-7.5) µg/ml for the mentioned compounds, respectively, The molar absorptivity value were 1.26×104, 3.72×104 and 2.86×104 L .mol -1.cm-1 respectively. The limit of detection (LOD) were 0.0963, 0.0430 and 0.0496 µg/ml, and the limit of quantitation (LOQ) were 0.3211, 0.1440 and 0.1655 µg/ml for phenol, catechol and resorcinol. The accuracy ranged between 99.58% -100.41% with a relative standard deviation ≤ 0.38 for all compounds It was found that these compounds formed a color product with benzidine at a ratio of 1:2. The rate constant of stability was 4.29 × 1011, 4.28 × 1010 and 8.74 × 1010 liters 2.mol-2 for the products phenol, catechol and resorcinol respectively. This indicates the good stability of these products.

  DOI：

  10.21608/ejchem.2022.135429.5957