| 1106849-92-6

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• CAS: 1106849-92-6
• 化学式: C₁₇H₁₂S₄
• 分子量: 344.546
• InChiKey: FDFOBEGZIZKLPH-BOPFTXTBSA-N

反应信息

• 作为产物：
  描述：

  phenyl (2E)-2-(4-phenyl-1,3-dithiol-2-ylidene)ethanedithioate 以 氘代氯仿 为溶剂， 生成
  参考文献：
  名称：

  E−Z Isomerization and Aggregation Phenomena of Dithiafulvenes in CHCl₃

  摘要：

  The physical-chemical properties of several 1,3-dithiafulvene (DTF) derivatives having a donor and acceptor group in the molecule were studied. The synthesis of these compounds produces selectively the E isomer, but when the compound is dissolved in CHCl3 isomerization to the Z isomer takes place with a rate that depends on the substituents. The interconversion rate is slow on the NMR time scale; therefore, two separated signals are observed, and they are used to measure the rate constant of isomerization. The equilibrium constant is, in all cases, very close to 1, and this is coincident with the fact that theoretical calculations of the energy of the two isomers in the gas phase differ by less than 0.1 kcal/mol. The isomerization reaction is completely reversible, and the E isomer can be obtained in pure form by selective crystallization. The derivatives with thioalkyl groups have a strong tendency to aggregate in CDCl3. The formation of the aggregates is evidenced from the changes in 1D H-1 NMR and DOSY spectra as a function of concentration. The compounds are highly delocalized, and this is reflected by the low activation energy for the isomerization.

  DOI：

  10.1021/jo802681h