(3,5-difluorophenyl)diazirine | 125330-16-7

• 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: (3,5-difluorophenyl)diazirine
• 英文别名: 3-Chloro-3-(3,5-difluorophenyl)diazirine
• CAS: 125330-16-7
• 化学式: C₇H₃ClF₂N₂
• 分子量: 188.564
• InChiKey: VMCGUTNKTWYVSK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  24.7
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (3,5-difluorophenyl)diazirine 以49%的产率得到
  参考文献：
  名称：

  CREARY, XAVIER;SKY, ANTHONY F.;PHILLIPS, GILLIAN, J. ORG. CHEM., 55,(1990) N, C. 2005-2011

  摘要：

  DOI：
• 作为产物：
  描述：

  3,5-二氟-苯甲脒盐酸盐 以38%的产率得到(3,5-difluorophenyl)diazirine
  参考文献：
  名称：

  SRN1 reactions of arylhalodiazirines with azide ion

  摘要：

  DOI：

  10.1021/jo00294a010

文献信息

• C-Azidodiazirines in the SRN1 reaction of azide ion with arylchlorodiazirines. Further insights into reaction mechanism
  作者：Xavier Creary

  DOI：10.1021/jo00079a014

  日期：1993.12

  Mixtures of arylchlorodiazirines and sodium azide in DMSO form visible charge transfer complexes. Irradiation of these solutions with fluorescent room light leads to S(RN)1 displacement of chloride and the transient formation of C-azidodiazirines. Relative reactivity studies (using competition experiments) show that nitro-substituted arylchlorodiazirines are substantially more reactive than other arylchlorodiazirines. This is attributed to facile electron transfer in the propagation cycle, involving the nitro-substituted aromatic ring. C-Azidodiazirines can be isolated in solution and spectroscopically characterized when the S(RN)1 reaction is initiated by addition of catalytic amounts of the sodium salt of 2-nitropropane. These azidodiazirines readily decompose at room temperature by first order processes to give molecular nitrogen and benzonitriles. Solvent and substituent effects on decomposition rates are minimal. Computational studies on potential intermediate carbenes in the decomposition of azidodiazirines have been carried out at the HF/6-31G* level. Singlet alpha-azidocarbenes RCN3, where R = NH2, OH, F, vinyl, phenyl, and CH3, are energy minima at this computational level. Isodesmic calculations show that the azido group is comparable to OH in its carbene stabilizing ability. Subsequent loss of N2 from alpha-azidocarbenes, leading to nitriles, is a highly exothermic process (126 kcal when R = vinyl and 128 kcal when R = phenyl).
• Reaction of arylhalodiazirines with thiophenoxide: a redox process
  作者：Xavier Creary、Anthony F. Sky、Gillian Phillips、David E. Alonso

  DOI：10.1021/ja00070a003

  日期：1993.8

  Phenylbromodiazirine reacts with thiophenoxide ion in methanol to give benzonitrile, benzamidine, ammonia, and diphenyl disulfide. The reaction is general for arylhalodiazirines, with electron-withdrawing groups on the aromatic ring exerting a small rate-enhancing effect. Three potential mechanisms are suggested for this redox process. These mechanisms include an N-sulfenylated diazirine, a diazirinyl radical, and a diazirinyl anion. Ring opening of these intermediates and subsequent transformations would lead to benzonitriles, benzamidine, and ammonia. A key intermediate in these transformations is PhSNH2, 32. This intermediate has been independently generated and found to rapidly convert to ammonia and diphenyl disulfide under the reaction conditions. Another proposed intermediate, N-(phenylthio)benzamidine, 38, has also been independently generated and subjected to the reaction conditions, where benzamidine and more diphenyl disulfide result. Theoretical calculations suggest the existence of isomeric diazirinyl anions. In addition to a diazirinyl ion with charge essentially on carbon, there is also an allylic-type ion with charge on the two nitrogen atoms. Single-electron reduction of a diazirinyl radical necessarily leads to a nitrogen-centered diazirinyl anion. Conversion of this anion to the carbon-centered diazirinyl anion is a forbidden process. These theoretical studies suggest that the diazirinyl anion may be a viable intermediate in solution.