1-(2,6-dichloro-4-trifluoromethylphenyl)-4-[1-hydroxy-(2,2,2-trifluoroethyl)]pyrazole | 617700-02-4

• 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-(2,6-dichloro-4-trifluoromethylphenyl)-4-[1-hydroxy-(2,2,2-trifluoroethyl)]pyrazole
• 英文别名: 1-[1-[2,6-Dichloro-4-(trifluoromethyl)phenyl]pyrazol-4-yl]-2,2,2-trifluoroethanol
• CAS: 617700-02-4
• 化学式: C₁₂H₆Cl₂F₆N₂O
• 分子量: 379.089
• InChiKey: SUMHLTPSYBZNQP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  23
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  38
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  1-(2,6-dichloro-4-trifluoromethylphenyl)-4-[1-hydroxy-(2,2,2-trifluoroethyl)]pyrazole 在 4-二甲氨基吡啶 、 盐酸羟胺 、 氨 、 碘 、 戴斯-马丁氧化剂 、 三乙胺 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 吡啶 、 甲醇 、 乙醚 、 乙醇 、 二氯甲烷 为溶剂， 反应 21.0h， 生成 3-{4-[1-(2,6-dichloro-3-iodo-4-trifluoromethylphenyl)-5-iodopyrazolo]}-3-(trifluoromethyl)diazirine
  参考文献：
  名称：

  Synthesis of a Tritium-Labeled, Fipronil-Based, Highly Potent, Photoaffinity Probe for the GABA Receptor

  摘要：

  3-{4-[1-(2,6-Dichloro-4-trifluoromethylphenyl)pyrazolo]}-3-(trifluoromethyl)diazirine is a fipronil-based (i.e. fiprole), high-affinity probe for the GABA receptor. For synthesis of the tritium-labeled version of this trifluoromethyldiazirinylfiprole ([H-3]TDF) the required intermediate, 3-{4-[1-(2,6-dichloro-3-iodo-4-trifluoromethylphenyl)-5-iodopyrazolo]}-3-(trifluoromethyl)diazirine, was prepared in 10 steps from pyrazole and 3,5-dichloro-4-fluorobenzotrifluoride. One of the key transformations was lithiation and subsequent iodination of the 4-(2,2,2-trifluoro-1-hydroxyethyl)pyrazole intermediate. The last step involved reduction of the diiodofiprole with tritium, Pd/C, and triethylamine in ethyl acetate and afforded [H-3]TDF with a specific activity of 15 Ci/mmol and 99% radiopurity.

  DOI：

  10.1021/jo034520z
• 作为产物：
  描述：

  1-(2,6-dichloro-4-trifluoromethylphenyl)-4-iodopyrazole 在 sodium tetrahydroborate 、 异丙基氯化镁 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 反应 6.0h， 生成 1-(2,6-dichloro-4-trifluoromethylphenyl)-4-[1-hydroxy-(2,2,2-trifluoroethyl)]pyrazole
  参考文献：
  名称：

  Synthesis of a Tritium-Labeled, Fipronil-Based, Highly Potent, Photoaffinity Probe for the GABA Receptor

  摘要：

  3-{4-[1-(2,6-Dichloro-4-trifluoromethylphenyl)pyrazolo]}-3-(trifluoromethyl)diazirine is a fipronil-based (i.e. fiprole), high-affinity probe for the GABA receptor. For synthesis of the tritium-labeled version of this trifluoromethyldiazirinylfiprole ([H-3]TDF) the required intermediate, 3-{4-[1-(2,6-dichloro-3-iodo-4-trifluoromethylphenyl)-5-iodopyrazolo]}-3-(trifluoromethyl)diazirine, was prepared in 10 steps from pyrazole and 3,5-dichloro-4-fluorobenzotrifluoride. One of the key transformations was lithiation and subsequent iodination of the 4-(2,2,2-trifluoro-1-hydroxyethyl)pyrazole intermediate. The last step involved reduction of the diiodofiprole with tritium, Pd/C, and triethylamine in ethyl acetate and afforded [H-3]TDF with a specific activity of 15 Ci/mmol and 99% radiopurity.

  DOI：

  10.1021/jo034520z