2-(4-(4,5-diphenyl-1H-imidazol-2-yl)benzylidene)malononitrile | 1586000-60-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-(4-(4,5-diphenyl-1H-imidazol-2-yl)benzylidene)malononitrile
• 英文别名: 2-(4-(4,5-Diphenyl-1H-imidazol-2-yl)benzylidene)malononitrile；2-[[4-(4,5-diphenyl-1H-imidazol-2-yl)phenyl]methylidene]propanedinitrile
• CAS: 1586000-60-3
• 化学式: C₂₅H₁₆N₄
• 分子量: 372.429
• InChiKey: IGSSFZUUFKJCCC-UHFFFAOYSA-N

物化性质

• 沸点：
  631.7±55.0 °C(Predicted)
• 密度：
  1.237±0.06 g/cm3(Predicted)

反应信息

• 作为产物：
  描述：

  4-(4,5-diphenyl-1H-imidazol-2-yl)benzaldehyde 、 丙二腈 在 三乙胺 作用下， 以 乙醇 为溶剂， 以65%的产率得到2-(4-(4,5-diphenyl-1H-imidazol-2-yl)benzylidene)malononitrile
  参考文献：
  名称：

  Colorimetric fluorescent cyanide chemodosimeter based on triphenylimidazole derivative

  摘要：

  In this paper, we demonstrated a highly selective calorimetric chemodosimeter for cyanide anion detection. This chemodosimeter having a triphenylimidazole group as a fluorescent signal unit and a dicyano-vinyl group as a reaction unit was synthesized by the Knoevenagel condensation of 4-(4,5-diphenyl-1H-imidazol-2-yl)benzaldehyde with malononitrile in a reasonable yield. The probe exhibited an intramolecular charge transfer (ICT) absorption band at 420 nm and emission band at 620 nm, respectively. Upon the addition of cyanide anion, the probe displayed a blue-shifted spectrum and loss in color due to the disruption of conjugation. With the aid of the fluorescence spectrometer, the chemodosimeter exhibited a detection limit of 0.11 mu M (S/N = 3). Interferences from other common anions associated with cyanide anion analysis were effectively inhibited. 2014 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.saa.2013.12.098