6,7-dibromo-2,3-dichloroquinoxaline | 76254-47-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 6,7-dibromo-2,3-dichloroquinoxaline
• 英文别名: 6,7-Dibrom-2,3-dichlor-chinoxalin
• CAS: 76254-47-2
• 化学式: C₈H₂Br₂Cl₂N₂
• 分子量: 356.831
• InChiKey: GEFUBONAJDPKHA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6,7-dibromo-2,3-dichloroquinoxaline 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 四(三苯基膦)钯 、 potassium carbonate 、 三乙胺 、 三氟乙酸 作用下， 以 1,4-二氧六环 、 水 、 乙腈 为溶剂， 反应 27.0h， 生成
  参考文献：
  名称：

  Overcoming energy loss of thermally activated delayed fluorescence sensitized-OLEDs by developing a fluorescent dopant with a small singlet–triplet energy splitting

  摘要：

  提出了一种抑制 OLED 中 T₁ 状态能量损失的方法。即开发具有可比较的 T₁ 能量的荧光固体，与 TADF 共同主持，因此，FD 上的 T₁ 激子将逃逸并返回到共主持体，然后转移到 FD 的单重态，最终促进光发射。

  DOI：

  10.1039/d1tc05700f

文献信息

• Singh,S. et al., Journal of the Indian Chemical Society, 1970, vol. 47, p. 415 - 418
  作者：Singh,S. et al.

  DOI：——

  日期：——
• Singh,S. et al., Journal of the Indian Chemical Society, 1970, vol. 47, p. 1150 - 1152
  作者：Singh,S. et al.

  DOI：——

  日期：——
• Singh,S. et al., Indian Journal of Chemistry, 1969, vol. 7, p. 569 - 571
  作者：Singh,S. et al.

  DOI：——

  日期：——
• Singh,S. et al., Indian Journal of Chemistry, 1968, vol. 6, p. 12 - 13
  作者：Singh,S. et al.

  DOI：——

  日期：——
• Vases and kites as cavitands
  作者：John R. Moran、John L. Ericson、Enrico Dalcanale、Judi A. Bryant、Carolyn B. Knobler、Donald J. Cram

  DOI：10.1021/ja00015a026

  日期：1991.7

  The syntheses, characterizations, and substituent effects on the vase vs kite conformations of 1-17 are described. These compounds are assembled by two-step syntheses from resorcinol (or 2-substituted derivatives) and aldehydes to form octols 18-26 in high yields, followed by 4-fold bridging reactions with quinoxalines 27-29 or pyrazine 30. In the crystal structure of 3.2CH2Cl2, one CH2Cl2 is enclosed in the vase cavity, while a second CH2Cl2 iS found surrounded by the four (CH2)4Cl groups. When the 2-position of resorcinol is hydrogen, only the vase form of the cavitands exists at 25-degrees-C or higher when quinoxaline bridged, as in 1-7, and at all available temperatures when pyrazine bridged, as in 13. The R and B groups of 1-7 can be varied to control solubility and cavity size without greatly affecting the vase-kite structures. When the 2-position of resorcinol is occupied by a methyl, an ethyl, or a bromine, as in 14-17, only the kite conformation is observed at all available temperatures. When the 2-position is hydrogen and the system is quinoxaline, only the kite conformer is observed at temperatures below -50-degrees-C. When the 2-position is CH3, the kite conformer equilibrates with its dimer. When the 2-position is CH3CH2, as in 17, the kite conformer does not form a dimer. The kite C2v structures under pseudorotation and also dimerize when they contain 2-methylresorcinyl groups to give dimers of D2d symmetry. In some systems, these processes could be differentiated by use of variable-temperature H-1 NMR spectra.