pivaloyl (5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphinan-2-yl) disulfide

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机二硫代磷酸及其衍生物
• 英文名称: pivaloyl (5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphinan-2-yl) disulfide
• 英文别名: S-[(5,5-dimethyl-2-sulfanylidene-1,3,2lambda5-dioxaphosphinan-2-yl)sulfanyl] 2,2-dimethylpropanethioate；S-[(5,5-dimethyl-2-sulfanylidene-1,3,2λ5-dioxaphosphinan-2-yl)sulfanyl] 2,2-dimethylpropanethioate
• 化学式: C₁₀H₁₉O₃PS₃
• 分子量: 314.431
• InChiKey: NBEDAGHOYYVYTH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  118
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  thiopivaloyl (5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphinan-2-yl) sulfide 在 N-叔丁基羟胺 、 三乙胺 作用下， 以 氯仿 为溶剂， 以81%的产率得到pivaloyl (5,5-dimethyl-2-thioxo-1,3,2-dioxaphosphinan-2-yl) disulfide
  参考文献：
  名称：

  New reaction of dithiophosphoric acids with O-thioacylhydroxylamines. Nucleophilic substitution or single electron transfer process?

  摘要：

  二取代的或受立体阻碍的羟胺与大体积的 S-硫代酰基二硫代磷酸反应生成 O-硫代酰基羟胺。O- 硫代酰羟胺与二硫代磷酸反应生成酰基硫代磷酰二硫化物和二硫代磷酸铵。自由基陷阱对反应产率的影响强烈表明，自由基参与了这一过程的机理。二硫代磷酸铵的氧化还原电位较低、O-硫代酰羟胺的光化学稳定性以及光对酰基硫代磷酸二硫化物产率的影响，都意味着所研究的反应涉及单电子转移过程。

  DOI：

  10.1039/b203619n

文献信息

• Reaction of thio and seleno phosphoric acid derivatives withO-thioacylated hydroxylamine
  作者：Grzegorz Cholewinski、Dariusz Witt、Radosław Majewski、Tadeusz Ossowski、Janusz Rachon

  DOI：10.1002/hc.20368

  日期：2007.11

  thio and seleno analogs of phosphoric acid 1b–f with O-thioacylhydroxylamine 2 was examined. The experimental evidence for the proposed mechanism involving an N—O bond cleavage and a single electron transfer process (SET) from phosphate anions was collected. The influence of phosphoric acids 1 structure and their oxidation potentials on the course of the reaction and products 3, 4, 6, 7 distribution

  检查了磷酸 1b-f 的硫代​​和硒代类似物与 O-硫代酰基羟胺 2 的反应性。收集了所提出机制的实验证据，该机制涉及磷酸根阴离子的 N-O 键断裂和单电子转移过程 (SET)。介绍了磷酸 1 结构及其氧化电位对反应过程和产物 3、4、6、7 分布的影响。© 2007 Wiley Periodicals, Inc. 杂原子化学 18:767–773, 2007; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20368
• May Dithiophosphoric Acid Participate in the SET Process?
  作者：Leszek Doszczak、Witold Przychodzen、Dariusz Witt、Janusz Rachon

  DOI：10.1080/10426500212210

  日期：2002.6.1

  Recently we have developed a convenient method for the synthesis of S-thioacyl dithiophosphates 1, excellent thioacylating reagents. When hydroxylanzines with one bulky group or two substituents on the nitrogen atom are treated with S-thioacyl dithiophosphates I O-thioacyl hydroxylamines 3 are produced exclusively. What is more important, compounds 3 undergo interesting reaction with dithiophosphoric acid 4 yielding amine and acyl thiophosphoryl disulfide 5. The disulfide 5 can be formed as a product of thiophilic attack of the dithiophosphate anion on the thiocarbonyl group in protonated O-thioacyl hydroxylamine 3. On the other hand, it is well known that dithiophosphate anions easily undergo one electron oxidation. Hence the dithiophosphate anion can act as single electron donor and disulfide 5 can be formed as a product of the SET reaction. The influence of light and radical traps strongly suggests that the second possibility operates in the reaction in focus.